Jun. 2022, 日本塑性加工学会新進賞, 塑性加工性および塑性加工を利用したプロセス技術に関する研究, 一般社団法人日本塑性加工学会
小林 純也
Official journal

Nov. 2021, 第39回軽金属奨励賞, 一般社団法人 軽金属学会
小林純也
Japan society

Mar. 2021, 研究奨励賞, 高強度低合金TRIP鋼に関する研究, 一般社団法人日本鉄鋼協会
小林純也
Others

Jan. 2021, 令和３年度 茨城⼤学学⻑学術表彰, 高強度低合金TRIP鋼に関する研究, 国立大学法人 茨城大学
小林純也
Others

2014, Gilbert R. Speich Award for Best Paper(AIST), Advanced Ultrahigh-Strength TRIP-Aided Martensite Steels for Automotive Applications
Koh-ichi Sugimoto;J. Kobayashi;D.V. Pham
Official journal

2010, 2010年度 日本機械学会三浦賞, 日本機械学会
Others

2008, 2008年度 日本機械学会畠山賞, 日本機械学会
Others

Mechanical Properties and Deformation Behavior in Severely Cold-Rolled Fe-Ni-Al-C Alloys with Lüders Deformation -Overview with Recent Experimental Results -
Shigeru Kuramoto; Yuta Kawano; Yuwa Mori; Junya Kobayashi; Satoshi Emura; Takahiro Sawaguchi
Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 2025

Evaluation of Shear-Punched Surface Layer Damage in Ultrahigh-Strength TRIP-Aided Steels with Bainitic Ferrite and/or Martensite Matrix Structure
Koh-ichi Sugimoto; Shoya Shioiri; Junya Kobayashi; Tomohiko Hojo, The damage to the shear-punched surface layers such as strain-hardening, strain-induced martensite transformation, and micro-void initiation behaviors was evaluated in the third-generation low-carbon advanced ultrahigh-strength TRIP-aided bainitic ferrite (TBF), bainitic ferrite–martensite (TBM), and martensite (TM) steels. In addition, the surface layer damage was related to (1) the mean normal stress generated during shear-punching and (2) microstructural properties such as the matrix structure, retained austenite characteristics, and second-phase properties. The shear-punched surface layer damage was produced under the mean normal stress between zero and negative in all the steels. The TBM and TM steels achieved relatively small surface layer damage. The small surface layer damage resulted in excellent cold stretch-flangeability, with a high crack-propagation/void-connection resistance on hole expansion., MDPI AG
Metals, 11 Sep. 2024, [Reviewed]

Effects of Mean Normal Stress and Microstructural Properties on Deformation Properties of Ultrahigh-Strength TRIP-Aided Steels with Bainitic Ferrite and/or Martensite Matrix Structure
Koh-ichi Sugimoto; Shoya Shioiri; Junya Kobayashi, The effects of mean normal stress on the deformation properties such as the strain-hardening, strain-induced martensite transformation, and micro-void initiation behaviors of low-carbon ultrahigh-strength TRIP-aided bainitic ferrite (TBF), bainitic ferrite/martensite (TBM), and martensite (TM) steels were investigated to evaluate the various cold formabilities. In addition, the deformation properties were related to the microstructural properties such as the matrix structure, retained austenite characteristics, and second-phase properties. Positive mean normal stress considerably promoted strain-induced martensite transformation and micro-void initiation, with an increased strain-hardening rate in an early strain range in all steels. In TM steel, the primary martensite matrix structure suppressed the micro-void initiation through high uniformity of a primary martensite matrix structure and a low strength ratio, although the strain-induced transformation was promoted, and a large amount of martensite/austenite constituent or phase was contained. A mixed matrix structure of bainitic ferrite/primary martensite in TBM steel also suppressed the micro-void initiation because of the refined microstructure and relatively stable retained austenite. Promoted micro-void initiation of TBF steel was mainly promoted by a high strength ratio., MDPI AG
Materials, 18 Jul. 2024, [Reviewed]

Warm V-Bendabilites and Hydrogen Embrittlement Properties of Ultrahigh-Strength Quenching and Partitioning-TRIP Steel Sheets
Tomohiko Hojo; Akihiko Nagasaka; Chihaya Tabata; Yuki Shibayama; Junya Kobayashi; Eiji Akiyama, Iron and Steel Institute of Japan
Tetsu-to-Hagane, May 2024, [Reviewed]

Severe plastic deformation for producing Superfunctional ultrafine-grained and heterostructured materials: An interdisciplinary review
Kaveh Edalati; Anwar Q. Ahmed; Saeid Akrami; Kei Ameyama; Valery Aptukov; Rashid N. Asfandiyarov; Maki Ashida; Vasily Astanin; Andrea Bachmaier; Victor Beloshenko; Elena V. Bobruk; Krzysztof Bryła; José María Cabrera; Amanda P. Carvalho; Nguyen Q. Chinh; In-Chul Choi; Robert Chulist; Jorge M. Cubero-Sesin; Gregory Davdian; Muhammet Demirtas; Sergiy Divinski; Karsten Durst; Jiri Dvorak; Parisa Edalati; Satoshi Emura; Nariman A. Enikeev; Ghader Faraji; Roberto B. Figueiredo; Ricardo Floriano; Marjan Fouladvind; Daniel Fruchart; Masayoshi Fuji; Hiroshi Fujiwara; Marcell Gajdics; Diana Gheorghe; Łukasz Gondek; Joaquín E. González-Hernández; Alena Gornakova; Thierry Grosdidier; Jen Gubicza; Dmitry Gunderov; Liqing He; Oscar Fabian Higuera; Shoichi Hirosawa; Anton Hohenwarter; Zenji Horita; Jelena Horky; Yi Huang; Jacques Huot; Yoshifumi Ikoma; Tatsumi Ishihara; Yulia Ivanisenko; Jae-il Jang; Alberto M. Jorge; Mie Kawabata-Ota; Megumi Kawasaki; Tarek Khelfa; Junya Kobayashi; Lembit Kommel; Anna Korneva; Petr Kral; Natalia Kudriashova; Shigeru Kuramoto; Terence G. Langdon; Dong-Hyun Lee; Valery I. Levitas; Cong Li; Hai-Wen Li; Yongtao Li; Zheng Li; Huai-Jun Lin; Klaus-Dieter Liss; Ying Liu; Diana Maritza Marulanda Cardona; Kenji Matsuda; Andrey Mazilkin; Yoji Mine; Hiroyuki Miyamoto; Suk-Chun Moon; MullerTimo Müller; Jairo Alberto Muñoz; Maxim Yu. Murashkin; Muhammad Naeem; Marc Novelli; Dániel Olasz; Reinhard Pippan; Vladimir V. Popov; Elena N. Popova; Gencaga Purcek; Patricia de Rango; Oliver Renk; Delphine Retraint; Ádám Révész; Virginie Roche; Pablo Rodriguez-Calvillo; Liliana Romero-Resendiz; Xavier Sauvage; Takahiro Sawaguchi; Hadi Sena; Hamed Shahmir; Xiaobin Shi; Vaclav Sklenicka; Werner Skrotzki; Nataliya Skryabina; Franziska Staab; Boris Straumal; Zhidan Sun; Maciej Szczerba; Yoichi Takizawa; Yongpeng Tang; Ruslan Z. Valiev; Alina Vozniak; Andrei Voznyak; Bo Wang; Jing Tao Wang; Gerhard Wilde; Fan Zhang; Meng Zhang; Peng Zhang; Jianqiang Zhou; Xinkun Zhu; Yuntian T. Zhu, Elsevier BV
Journal of Alloys and Compounds, May 2024, [Reviewed]

Evaluation of Shear-Punched Surface Layer Damage in Three Types of High-Strength TRIP-Aided Steel
Koh-ichi Sugimoto; Shoya Shioiri; Junya Kobayashi, The damage properties in the shear-punched surface layer, such as the strain-hardening increment, strain-induced martensite fraction, and initiated micro-crack/void characteristics at the shear and break sections, were experimentally evaluated to relate to the stretch-flangeability in three types of low-carbon high-strength TRIP-aided steel with different matrix structures. In addition, the surface layer damage properties were related to the mean normal stress developed on shear-punching and microstructural properties. The shear-punched surface damage of these steels was experimentally confirmed to be produced under the mean normal stress of negative to 0 MPa. TRIP-aided bainitic ferrite (TBF) steel had the smallest surface layer damage, featuring a significantly suppressed micro-crack/void initiation. This was due to the fine bainitic ferrite lath matrix structure, a low strength ratio of the second phase to the matrix structure, and the high mechanical stability of the retained austenite. On the other hand, the surface layer damage of TRIP-aided annealed martensite (TAM) steel was suppressed next to TBF steel and was smaller than that of TRIP-aided polygonal ferrite (TPF) steel. The surface layer damage was also characterized by a large plastic strain, a large amount of strain-induced martensite transformation, and a relatively suppressed micro-crack/void formation, which resulted from an annealed martensite matrix and a large quantity of retained austenite. The excellent stretch-flangeability of TBF steel might be caused by the suppressed micro-crack/void formation and high crack propagation/void connection resistance. The next high stretch-flangeability of TAM steel was associated with a small-sized micro-crack/void initiation and high crack growth/void connection resistance., MDPI AG
Metals, 30 Apr. 2024, [Reviewed]

Effect of Hydrogen on Fatigue Life and Fracture Morphologies of TRIP-Aided Martensitic Steels with Added Nitrogen
Tomohiko Hojo; Akihiko Nagasaka; Junya Kobayashi; Yuki Shibayama; Eiji Akiyama, The effects of hydrogen on the tensile properties, fatigue life, and tensile and fatigue fracture morphologies of nitrogen-added ultrahigh-strength transformation-induced plasticity (TRIP)-aided martensitic (TM) steels were investigated. The total elongation and number of cycles to failure (Nf) of the hydrogen-charged TM steels decreased with the addition of nitrogen; in particular, adding 100 ppm of nitrogen decreased the total elongation and Nf of the TM steels. The quasi-cleavage cracking around the AlN occurred near the sample surface, which is the crack propagation region, although dimples appeared at the center of the fracture surface in the tensile samples. The initial fatigue crack initiated at the AlN precipitate or matrix/AlN interface, located at the notch root. During crack propagation, new cracks were initiated at the AlN precipitates or matrix/AlN interfaces, while quasi-cleavage crack regions were observed around the AlN precipitates. The decrease in the total elongation and Nf of the hydrogen-charged TM steel with 100 ppm of added nitrogen might be attributable to the crack initiation around the AlN precipitates formed by a large amount of hydrogen trapped at the AlN precipitates and matrix/AlN interfaces, and to the dense distribution of AlN, which promoted crack linkage., MDPI AG
Metals, 17 Mar. 2024, [Reviewed]

Visualization of Hydrogen and Hydrogen-induced Defects in Tensile-deformed Pure Iron Using Hydrogen Microprint and Tritium Autoradiography
Toshiaki Manaka; Goroh Itoh; Junya Kobayashi; Shigeru Kuramoto; Yuji Hatano, Iron and Steel Institute of Japan
ISIJ International, 28 Feb. 2024, [Reviewed]

Effect of the Microstructures Adjacent to the Grain Boundaries on the Mechanical Properties and Hydrogen Embrittlement Susceptibilities of Al–Cu Alloys
Yuki Ishii; Junya Kobayashi; Shigeru Kuramoto; Goroh Itoh, Japan Institute of Metals
MATERIALS TRANSACTIONS, 01 Feb. 2024, [Reviewed]

Warm V-Bending and Hydrogen Embrittlement Properties of Ultrahigh-Strength TRIP-Aided Bainitic Ferrite Steel Sheets
Akihiko Nagasaka; Tomohiko Hojo; Junya Kobayashi; Chihaya Tabata
14th International Conference on the Technology of Plasticity ICTP-734 (2023.9), Springer Nature Switzerland AG 2024 K. Mocellin et al. (Eds.): ICTP 2023, LNME, 2024, [Reviewed]

Long Term and in situ Measurements of Nanostructure Evolution of Al-3.9Cu-1.5Mg Alloys by Laboratory High Energy Small-Angle X-Ray Scattering
Shin Fukuda; Masato Ohnuma; Goroh Itoh; Shigeru Kuramoto; Junya Kobayashi; Equo Kobayashi, Elsevier BV
2024

Effect of alloy compositions and aging conditions on tensile properties of cold-rolled Al-Mg-Si alloys
Hiroki Fukuzawa; Yuki Ishii; Junya Kobayashi; Equo Kobayashi; Masato Ohnuma; Shigeru Kuramoto; Goroh Itoh, Japan Institute of Light Metals
Journal of Japan Institute of Light Metals, 15 Dec. 2023

Effect of Process Condition and Test Environment on Tensile Properties in Cold-Rolled Al-Cu-Mg Alloys
Yuki Ishii; Junya Kobayashi; Equo Kobayashi; Masato Ohnuma; Shigeru Kuramoto; Goroh Itoh, Severe plastic deformation processing and subsequent aging treatment have been known to be effective for achieving higher strength than the conventional aging treatment in aluminum alloys. This study prepared the Al-Cu-Mg-based alloy sample, Al-5.3Cu-2.8Mg (mass%). The alloys were solution treated at 480, 495 and 505°C, and cold-rolled by 90%. The effect of process condition and test environment on tensile properties in cold-rolled Al-Cu-Mg alloys was investigated. Results confirm that strength and ductility were improved with increasing the solution heat treatment temperature regardless of test environment. 0.2% proof stress and ultimate tensile strength were higher than aging treatment specimens, but elongation to failure was lower than aged one. Hydrogen embrittlement susceptibility increased with increasing solution treatment temperature. Ductile fracture with many dimples is observed in both cold-rolled and aged specimens. Second-phase particles were observed at the bottom of the dimples. There was no significant difference in fracture surface between the different test environments., Trans Tech Publications, Ltd.
Solid State Phenomena, 05 Dec. 2023, [Reviewed]

History of microstructural control and some recent topics aiming strengthening of aluminum alloys
G. Itoh; S. Kuramoto; J. Kobayashi
Journal of the Japan Institute of Light Metals, Dec. 2023, [Reviewed]

Effect of Thermomechanical Rolling on Mechanical Properties of TRIP-Aided Steel Sheet
Junya Kobayashi; Taichi Kimura; Shun Kudo; Genta Kojima; Tomohiko Hojo; Shigeru Kuramoto; Goroh Itoh
Materials Science Forum, Dec. 2023, [Reviewed]

Fe-Ni-Al-C 系合金冷間圧延材のリューダース型変形挙動に及ぼすγ相安定性の影響
森 柚和; 河野 悠太; 小林 純也; 倉本 繁; 江村 聡; 澤口 孝宏,

The effect of stability of austenite (γ) phase on Lüders-like deformation behavior of cold-rolled Fe-Ni-Al-C alloys was investigated by digital image correlation (DIC) analysis, magnetic measurements and electron backscatter diffraction (EBSD) analysis. In this study, cold-rolled Fe-23Ni-5.0Al-0.5C (mass%) alloy (23Ni alloy) and Fe-25Ni-5.0Al-0.5C (mass%) alloy (25Ni alloy) were used. The tensile strength increased and the total elongation decreased with decreasing Ni content. Lüders-like deformation after yielding was observed up to a nominal strain of approximately 0.04 for the 23Ni alloy and approximately 1.0 for the 25Ni alloy. The transformation from γ to martensite (α') with a specific crystal orientation relationship was observed during tensile deformation, and it was found that the volume fraction of α' during tensile deformation increased more easily in 23Ni alloy than in 25Ni alloy. In addition, the increment of α' phase in 25Ni alloy was higher during Lüders-band propagation than after the band propagation. These results suggested that change of the Lüders-like deformation behavior was due to the change in γ stability.

, 一般社団法人 日本鉄鋼協会
鉄と鋼, 01 Aug. 2023, [Reviewed]

Warm tensile properties of low-alloy TRIP steel warm-rolled just prior to isothermal holding treatment
Katsumi Hattori; Genta Kojima; Junya Kobayashi; Goroh Itoh; Shigeru Kuramoto; Tomohiko Hojo, Abstract. Low-alloy TRIP steel sheets with ultra-high-strength that utilize transformation-induced plasticity of retained austenite have high strength and ductility. In this study, low-alloy TRIP steel sheets with thermo-mechanical treatment with warm rolling were prepared, and the effects of warm rolling on tensile properties were investigated. A hot-rolled sheet of the steel with Ms of 418.5°C was austenized and then quenched in a salt bath kept at 450°C. Two specimens of the sheet were warm-rolled by 40 and 60% and then isothermally held at 350℃ for 1ks. For comparison, a specimen was directly isothermally heat-treated at 350°C for 1ks. The three specimens were subjected to microstructural characterizations and tensile tests at temperatures ranging from 25 to 300°C. It was confirmed that the warm rolling increases the ductility/strength balance. The X-ray diffraction showed that the warm rolling causes an increase in volume fraction of the retained austenite, while its stability against the tensile deformation was somewhat complicated. The effect of the temperature and rolling reduction on the uniform elongation, which is the parameter mostly affected by TRIP, was successfully understood in terms of the volume fraction and the stability of the retained austenite., Materials Research Forum LLC
Materials Research Proceedings, 10 Jul. 2023, [Reviewed]

Mechanical Properties and Deformation Behavior in Severely Cold-Rolled Fe­-Ni­-Al­-C Alloys with Lüders Deformation - Overview with Recent Experimental Results -
Shigeru Kuramoto; Yuta Kawano; Yuwa Mori; Junya Kobayashi; Satoshi Emura and Takahiro Sawaguchi, 日本金属学会
Materials Transactions, Jul. 2023, [Reviewed]

Nanoscale Analysis of Solute Distribution in Ultrahigh-Strength Aluminum Alloys
Equo Kobayashi; Masato Ohnuma; Shigeru Kuramoto; Junya Kobayashi and Goroh Itoh, 日本金属学会
Materials Transactions, Jul. 2023, [Reviewed]

〔Major achievements〕Effects of Partial Replacement of Si by Al on Impact Toughness of 0.2%C-Si-Mn-Cr-B TRIP-Aided Martensitic Steel
K. Sugimoto; Y. Nakashima; J. Kobayashi; and T. Hojo
Metals, Jul. 2023, [Reviewed]

Effects of Thermomechanical Processing on Hydrogen Embrittlement Properties of UltraHigh-Strength TRIP-Aided Bainitic Ferrite Steels
Tomohiko Hojo; Yutao Zhou; Junya Kobayashi; Koh-ichi Sugimoto; Yoshito Takemoto; Akihiko Nagasaka; Motomichi Koyama; Saya Ajito and Eiji Akiyama, The effects of thermomechanical processing on the microstructure and hydrogen embrittlement properties of ultrahigh-strength, low-alloy, transformation-induced plasticity (TRIP)-aided bainitic ferrite (TBF) steels were investigated to apply to automobile forging parts such as engine and drivetrain parts. The hydrogen embrittlement properties were evaluated by conducting conventional tensile tests after hydrogen charging and constant load four-point bending tests with hydrogen charging. The 0.4 mass%C-TBF steel achieved refinement of the microstructure, improved retained austenite characteristics, and strengthening, owing to thermomechanical processing. This might be attributed to dynamic and static recrystallizations during thermomechanical processing in TBF steels. Moreover, the hydrogen embrittlement resistances were improved by the thermomechanical processing in TBF steels. This might be caused by the refinement of the microstructure, an increase in the stability of the retained austenite, and low hydrogen absorption of the thermomechanically processed TBF steels., MDPI AG
Metals, 31 Jan. 2022, [Reviewed]

Studies on Metal Forming Properties and Processing Technology Using Metal Working
小林純也
ぷらすとす, 2022

熱間圧延とオーステンパー処理による低合金TRIP鋼の高強度高延性化
小林 純也, 公益財団法人 天田財団
天田財団助成研究成果報告書, 2022

塑性加工性および塑性加工を利用したプロセス技術に関する研究
小林 純也, 一般社団法人 日本塑性加工学会
ぷらすとす, 2022

Effect of 90% cold rolling on precipitation behavior of Al-0.6Mg-1.0Si-0.5Cu alloy
Naoto Kirekawa; Minho O; Jun’ya Kobayashi; Masato Ohnuma; Shigeru Kuramoto; Goroh Itoh; Equo Kobayashi, Japan Institute of Light Metals
Journal of Japan Institute of Light Metals, 15 Dec. 2021, [Reviewed]

超高強度アルミニウム合金中の溶質配置のナノスケール解析 : 軽金属奨学会2019年度統合的先端研究の成果
小林 郁夫; 大沼 正人; 倉本 繁; 小林 純也; 伊藤 吾朗, 軽金属学会
軽金属, Dec. 2021

〔Major achievements〕Cold Formabilities of Martensite-Type Medium Mn Steel
K. Sugimoto; H. Tanino; and J. Kobayashi, Last, MDPI
Metals, Aug. 2021, [Reviewed]

〔Major achievements〕Effects of Matrix Structure and Nitrogen Content on Fatigue Properties of Ultrahigh-Strength Low Alloy TRIP-Aided Steels
Tomohiko Hojo; Junya Kobayashi; Koh-ichi Sugimoto; Yoshito Takemoto; Akihiko Nagasaka; Motomichi Koyama; Eiji Akiyama, Iron and Steel Institute of Japan
Tetsu-to-Hagane, Aug. 2021, [Reviewed]

〔Major achievements〕Effects of Retained Austenite on Hydrogen Embrittlement in TRIP-aided Bainitic Ferrite Steel Sheet
Junya Kobayashi; Ryo Sakata; Naoya Kakefuda; Goroh Itoh; Tomohiko Hojo, Lead
ISIJ International, Apr. 2021, [Reviewed]

Effects of Matrix Structure and Nitrogen Content on Fatigue Properties of Ultrahigh-Strength Low Alloy TRIP-Aided Steels
Tomohiko Hojo; Junya Kobayashi; Koh-ichi Sugimoto; Yoshito Takemoto; Akihiko Nagasaka; Motomichi Koyama; Eiji Akiyama
ISIJ International, Feb. 2021, [Reviewed]

Effect of Cooling Rate below Ms Temperature on Hydrogen Embrittlement of TRIP-Aided Martensitic Steels　　　　　　　　　　　　　　　
Naoya Kakefuda; Shintaro Aizawa; Ryo Sakata; Junya Kobayashi; Goroh Itoh and Tomohiko Hojo, Corresponding, Trans Tech Publications Ltd.
Materials Science Forum, Jan. 2021, [Reviewed]

〔Major achievements〕Microstructure and Tensile Properties of TRIP-Aided Steel Sheet Subjected to Hot-Rolling and Austempering　　　　　　　　　　　　　　　
Junya Kobayashi; Hiroto Sawayama; Naoya Kakefuda; Goroh Itoh; Shigeru Kuramoto and Tomohiko Hojo, Lead, Trans Tech Publications Ltd.
Materials Science Forum, Jan. 2021, [Reviewed]

Spinning Formability of Al-Mg-Si Alloy　　　　　　　　　　　　　　　
Shota Seta; Junya Kobayashi and Goroh Itoh, Corresponding, Trans Tech Publications Ltd.
Materials Science Forum, Jan. 2021, [Reviewed]

Suppression of Intergranular Fracture in 7000 Series Aluminum Alloys　　　　　　　　　　　　　　　
Goroh Itoh; Keisuke Hiyama; Bofan Lyu; Junya Kobayashi and Shigeru Kuramoto, Trans Tech Publications Ltd.
Materials Science Forum, Jan. 2021, [Reviewed]

Assessment of hydrogen embrittlement susceptibility of an Al-Cu-Mg alloy in humid air
Toshiaki Manaka; Takahiro Suzuki; Keisuke Hiyama; Junya Kobayashi; Shigeru Kuramoto; Goroh Itoh, In the present study, we investigated the hydrogen embrittlement susceptibility of Al-4%Cu-1.5%Mg alloys subjected to several heat treatments by means of SSRT tensile test and humid gas stress corrosion cracking(HG-SCC) test. For SSRT tensile test, the tensile test pieces were cut from cold-rolled sheets of 1mm thickness. The test pieces were solution-treated at 500 °C for 1h, water-quenched and aged at 140oC for 72h or 360h. SSRT tensile test was performed in two environments, humid air (HA) and dry nitrogen gas (DNG) at a strain rate of 1.39×10^-6s^-1. Fracture surfaces were observed with a scanning electron microscopy(SEM). For HG-SCC test, compact tension(CT) test pieces were cut from hot-rolled plate of 6mm thickness. The CT test pieces were solution-treated, water-quenched and aged at 190 °C for 9h, 50°C for 96h or 140°C for 72h. HG-SCC test was carried out based on High Pressure Institute of Japan standards; HPIS E103:2018. The pre-cracked CT specimens with stress loading were kept for 90 days in two environments, HA and DNG. After 90 days, in order to observe whether cracks propagated due to HG-SCC, the specimens were loaded up to fracture rapidly, followed by SEM observation. Tensile properties obtained by SSRT tensile tests were almost the same in two environments. Also, fracture surfaces were not affected by test environments. Moreover, in HG-SCC tests, crack propagation was not observed at each test conditions. Therefore, Al-4%Cu-1.5%Mg alloy had high-resistance to hydrogen embrittlement., EDP Sciences
MATEC Web of Conferences, 2020

関東地域3支部新進部会合同 若手学生研究交流会実施報告
小林 純也, 一般社団法人 日本塑性加工学会
ぷらすとす, 2020

Effects of Alloying Elements Addition on Delayed Fracture Properties of Ultra High-Strength TRIP-Aided Martensitic Steels　　　　　　　　　　　　　　　
Tomohiko Hojo; Junya Kobayashi; Koh-ichi Sugimoto; Akihiko Nagasaka; Eiji Akiyama
Metals, Dec. 2019, [Reviewed]

Effects of Cr and Mo on Mechanical Properties of Hot-Forged Medium Carbon TRIP-Aided Bainitic Ferrite Steels
Koh-ichi Sugimoto; Sho-hei Sato; Junya Kobayashi; Ashok Kumar Srivastava
Metals, 30 Sep. 2019, [Reviewed], [Invited]

Al-8%Zn-2%Mg-2%Cu-0.15%Zr合金の強度と水素脆化特性に及ぼす冷間圧延の影響　　　　　　　　　　　　　　　
蓼沼宏樹; 倉本 繁; 小林純也; 伊藤吾朗; 青井一郎; 清水吉広
軽金属, Jun. 2019, [Reviewed]

圧縮水素容器用アルミニウム合金の湿潤ガス応力腐食割れ試験方法　　　　　　　　　　　　　　　
伊藤吾朗; 倉本 繁; 車田 亮; 小林純也; 浅見重則; 小川武史
圧力技術, 2019

7075アルミニウム合金圧延材の引張特性に及ぼす試験雰囲気の影響
中島 祐樹; 倉本 繁; 小林 純也; 伊藤 吾朗; 大石 敬一郎; 青井 一郎; 清水 吉広
軽金属, Nov. 2018, [Reviewed]

Hot spinning formability of aluminum alloy tube
Shunichiro Nakasato; Junya Kobayashi; Goroh Itoh
Procedia Manufacturing, 2018, [Reviewed]

Critical assessment of TRIP-aided bainitic ferrite steels
Koh-ichi Sugimoto; Tomohiko Hojo; Junya Kobayashi, Taylor and Francis Ltd.
Materials Science and Technology (United Kingdom), 22 Nov. 2017, [Reviewed]

Warm Formability of 0.2 Pct C-1.5 Pct Si-5 Pct Mn Transformation-Induced Plasticity-Aided Steel
Koh-ichi Sugimoto; Shin-nosuke Hidaka; Hikaru Tanino; Junya Kobayashi
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, May 2017, [Reviewed]

Effects of Mn Content on the Warm Stretch-Flangeabiliy of C-Si-Mn TRIP-Aided Steels
Koh-ichi Sugimoto; Shin-nosuke Hidaka; Hikaru Tanino; Junya Kobayashi
STEEL RESEARCH INTERNATIONAL, Mar. 2017, [Reviewed]

Warm ductility of 0.2% C-1.5% Si-5% Mn TRIP-aided steel
Koh-ichi Sugimoto; Hikaru Tanino; Junya Kobayashi
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, Mar. 2017, [Reviewed]

Microstructure and Mechanical Properties of Ultrahigh-Strength TRIP-aided Steels
Koh-ichi Sugimoto; Junya Kobayashi; Tomohiko Hojo
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 2017, [Reviewed]

Spinning workability of Al-Mg-Si alloy extruded tube using the forming die
Fumiya Nanjo; Junya Kobayashi; Goroh Itoh, Elsevier Ltd
Procedia Engineering, 2017, [Reviewed]

関東地域3支部新進部会若手学生研究交流会実施報告
小林 純也, 一般社団法人 日本塑性加工学会
塑性と加工, 2017

Formabilities of C-Si-Al-Mn transformation-induced plasticity-aided martensitic sheet steel
Junya Kobayashi; Yumenori Nakashima; Koh-Ichi Sugimoto; Goroh Itoh, Trans Tech Publications Ltd
Materials Science Forum, 2016, [Reviewed]

Deformation characteristics of 6066 and 6069 aluminum alloys at elevated temperatures
Shohei Koizumi; Junya Kobayashi; Goroh Itoh, Trans Tech Publications Ltd
Materials Science Forum, 2016, [Reviewed]

Tensile properties of recrystallized and unrecrystallized tungsten at elevated temperatures
Nobuatsu Tano; Junya Kobayashi; Goroh Itoh; Akira Kurumada; Shingo Mukae, Trans Tech Publications Ltd
Materials Science Forum, 2016, [Reviewed]

アルミニウム材料の技術開発の現状と将来展望
小林純也,倉本 繁,伊藤吾朗, 日刊工業新聞社
プレス技術, 2016, [Invited]

Impact properties of low-alloy transformation-induced plasticity-steels with different matrix
T. Hojo; J. Kobayashi; K. Sugimoto
MATERIALS SCIENCE AND TECHNOLOGY, 2016, [Reviewed]

第12回先進材料の超塑性に関する国際会議（ICSAM2015）実施報告
小林 純也, 一般社団法人 日本塑性加工学会
塑性と加工, 2016, [Reviewed]

Impact Toughness of Medium-Mn Transformation-Induced Plasticity-Aided Steels
Koh-ichi Sugimoto; Hikaru Tanino; Junya Kobayashi
STEEL RESEARCH INTERNATIONAL, Oct. 2015, [Reviewed]

Effects of Thermomechanical Processing on Microstructure and Shear Properties of 22SiMnCrMoB TRIP-aided Martensitic Steel　　　　　　　　　　　　　　　
Tomohiko Hojo; Junya Kobayashi; Takuya Kochi; Koh-ichi Sugimoto
Proceedings of The Iron & Steel Technology Conference and Exposition (AISTech2015), 2015, [Reviewed]

Effects of cooling rate on impact toughness of an ultrahigh-strength TRIP-aided martensitic steel
Junya Kobayashi; Yuji Nakajima; Koh Ichi Sugimoto, Trans Tech Publications
Advanced Materials Research, 2014, [Reviewed]

Fracture Toughness of an Advanced Ultrahigh-strength TRIP-aided Steel
Junya Kobayashi; Daiki Ina; Asahiko Futamura; Koh-ichi Sugimoto
ISIJ INTERNATIONAL, 2014, [Reviewed]

Effects of Microalloying on Stretch-flangeability of Ultrahigh-strength TRIP-aided Martensitic Steel Sheets
Duc Van Pham; Junya Kobayashi; Koh-ichi Sugimoto
ISIJ INTERNATIONAL, 2014, [Reviewed]

The Effects of Cooling Rate on Retained Austenite Characteristics of a 0.2C-1.5Si-1.5Mn-1.0Cr-0.05Nb TRIP-aided Martensitic Steel　　　　　　　　　　　　　　　
Koh-ichi Sugimoto; Junya Kobayashi; Yuji Nakajima
Materials Science Forum, 2014, [Reviewed]

Fracture Toughness of Advanced TRIP-Aided Martensitic Steels
Koh-ichi Sugimoto; Junya Kobayashi; Daiki Ina
Key Engineering Materials, 2014, [Reviewed]

Cold formability of 22SiMnCrB TRIP-aided martensitic sheet steel
Junya Kobayashi; Hiroki Tonegawa; Koh-ichi Sugimoto
Procedia Engineering, 2014, [Reviewed]

Mechanical Properties of TRIP-aided Martensitic Steels for Hot-Worked Automotive Drivetrain Components　　　　　　　　　　　　　　　
Koh-ichi Sugimoto; Junya Kobayashi; Tomohiko Hojo
Proceedings of 4th International Conference on Steels in Cars and Trucks, (June 15-19, 2014), 2014, [Invited]

Stretch-flangeability of 0.2%C–1.5%Si–(1.5–5)%Mn TRIP-aided martensitic steels　　　　　　　　　　　　　　　
Koh-ichi Sugimoto; Hikaru Tanino; Junya Kobayashi
Proceedings of Materials Science and Technology 2014 (MS&T 2014), 2014, [Reviewed]

冷間プレス成形性に優れた先進超高強度低合金TRIP鋼板
杉本 公一; 小林 純也, The Japan Society for Technology of Plasticity
塑性と加工, 25 Nov. 2013, [Invited]

Effects of Microalloying on the Impact Toughness of Ultrahigh-Strength TRIP-Aided Martensitic Steels
Junya Kobayashi; Daiki Ina; Yuji Nakajima; Koh-Ichi Sugimoto
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, Nov. 2013, [Reviewed]

Effects of Microalloying on Stretch-flangeability of TRIP-aided Martensitic Sheet Steel
Duc Van Pham; Junya Kobayashi; Koh-ichi Sugimoto
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 2013, [Reviewed]

Notch-fatigue Strength of Advanced TRIP-aided Martensitic Steels
Junya Kobayashi; Nobuo Yoshikawa; Koh-ichi Sugimoto
ISIJ INTERNATIONAL, 2013, [Reviewed]

TRIP型マルテンサイト鋼板の伸びフランジ性に及ぼす合金元素添加の影響
ファム バン ドック; 小林 純也; 杉本 公一, Corresponding, The Iron and Steel Institute of Japan
鉄と鋼, 2013, [Reviewed]

Advanced Ultrahigh-Strength TRIP-aided Martensitic Sheet Steels for Automotive Applications　　　　　　　　　　　　　　　
Koh-ichi Sugimoto; Junya Kobayashi, Association for Iron & Steel Technology, Warrendale, PA, USA
Proceedings on the International Symposium on New Developments in Advanced High Strength Sheet Steels (AIST 2013), 2013, [Reviewed]

Hydrogen Embrittlement Properties of Ultra High-Strength Low Alloy TRIP-Aided Steels with Hot Forging Process　　　　　　　　　　　　　　　
Tomohiko Hojo; Junya Kobayashi; 他5名, The Chinese for Metals, China
Proceedings of The 2nd International Symposium on Automobile Steel (ISAS2013), 2013, [Reviewed]

Fatigue Properties of Nitrogen Added Ultra High-Strength Low Alloy TRIP-Aided Steels　　　　　　　　　　　　　　　
Tomohiko Hojo; Junya Kobayashi; Koh-ichi Sugimoto
Proceedings of Materials Science & Technology 2013 Conference (MS&T’2013), 2013, [Reviewed]

Effects of Cr and Mo on Retained Austenite Characteristics and Tensile Properties of TRIP-aided Annealed Martensitic Steel
Junya Kobayashi; Nobuo Yoshikawa; Toshio Murakami; Koh-ichi Sugimoto
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, Nov. 2012, [Reviewed]

Notch-Fatigue Properties of Advanced TRIP-Aided Bainitic Ferrite Steels
Nobuo Yoshikawa; Junya Kobayashi; Koh-ichi Sugimoto
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, Nov. 2012, [Reviewed]

Fracture toughness of A 1.5 GPa grade C-Si-Mn-Cr-Nb trip-aided martensitic steel　　　　　　　　　　　　　　　
Junya Kobayashi; Daiki Ina; Koh-Ichi Sugimoto
AIST Steel Properties and Applications Conference Proceedings - Combined with MS and T'12, Materials Science and Technology 2012, 2012

Microstructure and Retained Austenite Characteristics of Ultra High-strength TRIP-aided Martensitic Steels
Junya Kobayashi; Sung-Moo Song; Koh-ichi Sugimoto
ISIJ INTERNATIONAL, 2012, [Reviewed]

Effects of the Addition of Cr, Mo and Ni on the Microstructure and Retained Austenite Characteristics of 0.2% C-Si-Mn-Nb Ultrahigh-strength TRIP-aided Bainitic Ferrite Steels
Junya Kobayashi; Daiki Ina; Nobuo Yoshikawa; Koh-ichi Sugimoto
ISIJ INTERNATIONAL, 2012, [Reviewed]

TRIP型焼鈍マルテンサイト鋼の残留オーステナイト特性と引張特性に及ぼすCrとMoの影響
小林 純也; 吉川 伸麻; 村上 俊夫; 杉本 公一, Lead, The Iron and Steel Institute of Japan
鉄と鋼, 2012, [Reviewed]

Effects of hot-forging process on combination of strength and toughness in ultra high-strength TRIP-aided martensitic steels
Junya Kobayashi; Koh-Ichi Sugimoto; Goro Arai
Advanced Materials Research, 2012, [Reviewed]

Stretch Flangeability and Bendability of a 0.2C-1.5Si-1.5Mn-0.05Nb Ultrahigh-Strength TRIP-Aided Martensitic Sheet Steel　　　　　　　　　　　　　　　
Junya Kobayashi; Duc Van Pham; Koh-ichi Sugimoto
Steel Research International, 2012, [Reviewed]

Fracture Toughness of a 1.5GPa Grade C-Si-Mn-Cr-Nb TRIP- Aided Martensitic Steels　　　　　　　　　　　　　　　
Junya Kobayashi; Daiki Ina; Koh-ichi Sugimoto, MS&T Partner Societies, Pittsburgh, PA, USA
Proceedings of Materials Science and Technology 2012 (MS&T2012), 2012, [Reviewed]

Hydrogen Embrittlement Resistances of Alloying Elements Adding Ultra High Strength Low Alloy TRIP-aided Steels　　　　　　　　　　　　　　　
Tomohiko Hojo; Junya Kobayashi; Koh-ichi Sugimoto, MS&T Partner Societies, Pittsburgh, PA, USA
Proceedings of Materials Science and Technology 2012 (MS&T2012), 2012, [Reviewed]

Stretch-flangeability of 1.5GPa Grade TRIP-aided Martensitic Cold Rolled Sheet Steels　　　　　　　　　　　　　　　
Junya Kobayashi; Duc Van Pham; Koh-ichi Sugimoto
Steel Research International, 2011, [Reviewed]

Stretch-flangeability of Ultra High-strength Low Alloy TRIP-aided Sheet Steels with Mixed Structure Matrix of Bainitic Ferrite and Martensite
Muneo MURATA; Junya KOBAYASHI and Koh-ichi SUGIMOTO
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 2010, [Reviewed]

Development of Ultra High-Strength Low Alloy TRIP-Aided Steel for Hot-Forging Parts
Koh-ichi Sugimoto; Junya Kobayashi; Goro Arai
Steel Research International, 2010, [Reviewed]

Newly Developed TRIP-aided Martensitic Steels　　　　　　　　　　　　　　　
Koh-ichi Sugimoto; Junya Kobayashi, The Minerals, Metals & Materials Society (TMS), Warrendale, PA, USA
Materials Science & Technology 2010 Conference & Exhibition (Recent Developments in Steel Processing), 2010, [Reviewed]

Toughness of Ultra High-Strength TRIP-Aided Steels with high Hardenability　　　　　　　　　　　　　　　
Koh-ichi Sugimoto; Junya Kobayashi; Daiki Ina, Metallurgical Industry Press, Beijing, China, Abstract and Manuscript
The International Conference on Advanced Steels 2010 (ICAS 2010), 2010, [Reviewed]

超高強度低合金TRIP鋼の組織と機械的性質　　　　　　　　　　　　　　　
杉本公一; 小林純也; 北條智彦
鉄と鋼, 2017, [Invited]

Hydrogen Embrittlement Properties of Cr added Ultra High-Strength TRIP-Aided Martensitic Steels
北條 智彦; 小林 純也; 杉本 公一
材料とプロセス 日本鉄鋼協会 編, 17 Sep. 2013

317 Delayed Fracture Properties of Nitrogen Added Ultra High Strength Low Alloy TRIP-Aided Sheet Steels
HOJO Tomohiko; KOBAYASHI Junya; SUGIMOTO Koh-ichi
講演論文集, 28 Feb. 2012

713 Fatigue Properties of Nitrogen added Ultra High Strength Low Alloy TRIP-Aided Sheet Steels
HOJO Tomohiko; KOBAYASHI Junya; SUGIMOTO Koh-ichi
学術講演会講演論文集, 2012

加工熱処理による低合金TRIP鋼板の高強度高延性化　　　　　　　　　　　　　　　
小林純也
第172回超塑性研究会 「超塑性研究の軌跡と展望」, 05 Oct. 2024, [Invited]
20241005

Effect of Ni on Tensile Properties at Room Temperature of Rolled Fe-Cr-Ni-N Alloys　　　　　　　　　　　　　　　
小金沢魁; 木村環太; 五味直; 倉本繁; 小林純也; 江村聡; 澤口孝宏
材料とプロセス(CD-ROM), 2024
2024, 2024

Effect of aging condition and test environment on tensile properties and hydrogen desorption behavior in Al-Cu alloys　　　　　　　　　　　　　　　
石井裕樹; 小林純也; 倉本繁; 伊藤吾朗
軽金属学会大会講演概要, 2024
2024, 2024

Effect of degassing treatment on tensile properties and hydrogen embrittlement susceptibility of cold-rolled aluminum alloys　　　　　　　　　　　　　　　
WU Ziang; 小林純也; 堀川敬太郎; 倉本繁; 伊藤吾朗
軽金属学会大会講演概要, 2024
2024, 2024

Hydrogen embrittlement crack related with the interface between grain boundary precipitate and the matrix in an Al-Zn-Mg-Cu alloy　　　　　　　　　　　　　　　
永井竜太; 伊藤吾朗; 倉本繁; 小林純也; 井誠一郎
軽金属学会大会講演概要, 2024
2024, 2024

Effect of alloy composition on anisotropy in tensile properties of cold-rolled Al-Cu-Mg alloys　　　　　　　　　　　　　　　
美濃部龍; 石井裕樹; 小林郁夫; 大沼正人; 小林純也; 倉本繁; 伊藤吾朗
軽金属学会大会講演概要, 2024
2024, 2024

Contribution of nanostructure in each aging stage on the mechanical properties in 2000 series aluminum alloys studied by the combination of DSC and in-situ SAXS　　　　　　　　　　　　　　　
福田深; 大沼正人; 倉本繁; 伊藤吾朗; 小林純也; 小林郁夫
軽金属学会大会講演概要, 2024
2024, 2024

Microstructure analysis of aluminum substrates irradiated with hydrogen plasma　　　　　　　　　　　　　　　
湯田浩登; 伊藤吾朗; 佐藤直幸; 倉本繁; 小林純也
軽金属学会大会講演概要, 2024
2024, 2024

Effect of γ-phase stability and second phase volume fraction on tensile properties of Fe-Ni-Al-C alloys　　　　　　　　　　　　　　　
木村環太; 小金沢魁; 高畑光汰; 小林祐馬; 倉本繁; 小林純也; 江村聡; 澤口孝宏
材料とプロセス(CD-ROM), 2024
2024, 2024

Effect of retained austenite on warm tensile properties of warm-rolled TBM steel　　　　　　　　　　　　　　　
服部克海; 小林純也; 倉本繁; 伊藤吾朗; 北條智彦
材料とプロセス(CD-ROM), 2024
2024, 2024

Effect of thermomechanical treatment on tensile properties of TRIP-aided steel sheet with bainitic ferrite and martensite　　　　　　　　　　　　　　　
深作隼也; 赤間翔伍; 小林純也; 倉本繁; 伊藤吾朗; 北條智彦
材料とプロセス(CD-ROM), 2024
2024, 2024

Effects of Annealing on Microstructure and Mechanical Properties in Fe-Ni-Al-C Alloys　　　　　　　　　　　　　　　
高畑光汰; 木村環太; 倉本繁; 小林純也; 江村聡; 澤口孝宏
材料とプロセス(CD-ROM), 2024
2024, 2024

Effect of Hydrogen Content on mechanical properties in cold-rolled Al-Cu-Mg alloys　　　　　　　　　　　　　　　
WU Ziang; 石井裕樹; 小林純也; 倉本繁; 伊藤吾朗
軽金属学会大会講演概要, 2023
2023, 2023

Observation of intergranular fracture surface caused by hydrogen embrittlement in an Al-Zn-Mg-Cu alloy　　　　　　　　　　　　　　　
永井竜太; 伊藤吾朗; 井誠一郎; 倉本繁; 小林純也
軽金属学会大会講演概要, 2023
2023, 2023

Effect of solute concentration on tensile properties in cold-rolled Al-Cu-Mg alloys　　　　　　　　　　　　　　　
石井裕樹; 小林純也; 小林郁夫; 大沼正人; 倉本繁; 伊藤吾朗
軽金属学会大会講演概要, 2023
2023, 2023

Effect of rolling temperature on mechanical properties of TRIP-aided martensitic steel sheet　　　　　　　　　　　　　　　
小島元太; 松井璃音; 小林純也; 倉本繁; 伊藤吾朗; 北條智彦
材料とプロセス(CD-ROM), 2023
2023, 2023

Microstructure and Mechanical Properties of Cold Rolling Fe-23%Ni-5.0%Al-0.8%C Alloy　　　　　　　　　　　　　　　
五味直; 木村環太; 倉本繁; 小林純也; 江村聡; 澤口孝宏
材料とプロセス(CD-ROM), 2023
2023, 2023

SM400Bの引張特性と微細組織に及ぼす鏡板加工の影響　　　　　　　　　　　　　　　
杜宇航; 小林純也; 倉本繋; 伊藤吾朗; 林正文; 田村隆行; 今村貴康
塑性加工連合講演会講演論文集(CD-ROM), 2023
2023, 2023

Analysis of precipitation strengthening mechanisms in Al-3.9Cu-1.5Mg alloys using in-situ SAXS　　　　　　　　　　　　　　　
福田深; 大沼正人; 倉本繁; 伊藤吾朗; 小林純也; 小林郁夫
軽金属学会大会講演概要, 2023
2023, 2023

Effect of substrate composition on aluminum hydride formation on aluminum base substrate by hydrogen plasma　　　　　　　　　　　　　　　
大内智晴; 湯田浩登; 伊藤吾朗; 佐藤直幸; 倉本繁; 小林純也
軽金属学会大会講演概要, 2023
2023, 2023

Effect of cold-rolling reduction and aging treatment temperature on hydrogen content in aluminum alloys　　　　　　　　　　　　　　　
WU Ziang; 石井裕樹; 小林純也; 倉本繁; 伊藤吾朗
軽金属学会大会講演概要, 2023
2023, 2023

高強度低合金TRIP鋼に関する研究　　　　　　　　　　　　　　　
小林純也
令和３年度茨城⼤学学⻑学術表彰 表彰式及び受賞記念講演会, 26 Jan. 2022, 茨城大学, [Invited]
20220126, 20220126

Effect of hydrogen content on tensile properties in cold-rolled and aged Al-Cu-Mg alloys　　　　　　　　　　　　　　　
WU Ziang; 石井裕樹; 小林純也; 倉本繁; 伊藤吾朗
軽金属学会大会講演概要, 2022
2022, 2022

Effect of strain rate on inhomogeneous deformation behavior in cold-rolled Al-Cu-Mg alloys　　　　　　　　　　　　　　　
石井裕樹; 小林純也; 小林郁夫; 大沼正人; 倉本繁; 伊藤吾朗
軽金属学会大会講演概要, 2022
2022, 2022

Aluminum hydride formation by means of hydrogen plasma irradiation affected by irradiation condition　　　　　　　　　　　　　　　
大内智晴; 伊藤吾朗; 佐藤直幸; 倉本繁; 小林純也
軽金属学会大会講演概要, 2022
2022, 2022

アルミニウム合金の塑性加工と水素脆化特性　　　　　　　　　　　　　　　
小林純也
一般社団法人 軽金属学会 創立70周年記念 第141回秋期大会, 14 Nov. 2021, 一般社団法人 軽金属学会, [Invited]
20211114, 20211114

高強度低合金TRIP鋼に関する研究　　　　　　　　　　　　　　　
小林純也
一般社団法人 日本鉄鋼協会 第181回春季講演大会, 17 Mar. 2021, 一般社団法人 日本鉄鋼協会, [Invited]
20210317, 20210319

学生が運営するファブラボ鋳造クラブ構想　　　　　　　　　　　　　　　
益子 雄行; 伊藤 伸英; 伊藤 吾朗; 小林 純也
精密工学会学術講演会, 2017, 精密工学会

難燃性マグネシウム合金の疲労特性評価　　　　　　　　　　　　　　　
橋本 拳志; 山田 隆一; 鬼澤 海; 伊藤 吾朗; 車田 亮; 倉本 繁; 小林 純也; 伊藤 友美; 野田 雅史
茨城講演会, 2017, 日本機械学会関東支部

Al-Mg-Si 合金の耐湿潤ガス応力腐食割れ特性に及ぼす Pb,Bi の影響　　　　　　　　　　　　　　　
杢家 弘樹; 青島 翔平; 秋篠 亮太; 大渕 知之; 車田 亮; 伊藤 吾朗; 倉本 繁; 小林 純也
茨城講演会, 2017, 日本機械学会関東支部

Al-Cu 系合金冷間圧延材の機械的特性
豊田 章嵩; 藤澤 竜星; 小林 純也; 倉本 繁; 伊藤 吾朗
茨城講演会講演論文集, 2017, 一般社団法人 日本機械学会

冷間圧延した 7000 系アルミニウム合金の機械的特性
蓼沼 宏樹; 中島 祐樹; 小林 純也; 倉本 繁; 伊藤 吾朗; 青井 一郎; 清水 吉広
茨城講演会講演論文集, 2017, 一般社団法人 日本機械学会

オーステナイト系ステンレス鋼の機械的性質に及ぼす水素脆化の影響
天羽 玄; 沼賀 慎; 小林 純也; 倉本 繁
茨城講演会講演論文集, 2017, 一般社団法人 日本機械学会

Al-Mg-Si 合金の耐湿潤ガス応力腐食割れ特性に及ぼす主成分の影響
大渕 知之; 秋篠 亮太; 青島 翔平; 杢家 弘樹; 車田 亮; 伊藤 吾朗; 倉本 繁; 小林 純也
茨城講演会講演論文集, 2017, 一般社団法人 日本機械学会

フェライト系ステンレス鋼中の水素挙動
岡崎 共洋; 橋本 明; 小林 純也; 伊藤 吾朗
茨城講演会講演論文集, 2017, 一般社団法人 日本機械学会

SSRT 試験法による難燃性マグネシウム合金の水素脆化特性の評価
佐野 亮太; 井出 一平; 伊藤 吾朗; 倉本 繁; 小林 純也; 伊藤 友美; 野田 雅史
茨城講演会講演論文集, 2017, 一般社団法人 日本機械学会

加工後に取り出し可能な成形型を用いた口端部スピニング加工
坂田 僚; 南條 郁弥; 中里 駿一郎; 小林 純也; 伊藤 吾朗
茨城講演会講演論文集, 2017, 一般社団法人 日本機械学会

トリチウムオートラジオグラフィによる金属材料中の水素の挙動解析　　　　　　　　　　　　　　　
伊藤吾朗; 小林純也; 真中俊明; 波多野雄治
2017

Fe-Cr-Ni 系合金の機械的特性に及ぼす試験環境の影響
高井 悠宇; 沼賀 慎; 小林 純也; 倉本 繁
茨城講演会講演論文集, 2016, 一般社団法人 日本機械学会

アルミニウムのスピニング加工性に及ぼすダイの有無の影響
中里 駿一郎; 南條 郁弥; 小林 純也; 伊藤 吾朗
茨城講演会講演論文集, 2016, 一般社団法人 日本機械学会

414 冷間加工したSUS301鋼の機械的特性(OS4-(4),OS4 オーガナイズドセッション≪材料・組織と加工≫)
沼賀 慎; 倉本 繁; 小林 純也
茨城講演会講演論文集 : Ibaraki district conference, 27 Aug. 2015, 一般社団法人日本機械学会

大学生によるものづくり教室の企画と実践（６報）
伊藤 伸英; 伊藤 吾朗; 小林 純也
精密工学会学術講演会講演論文集, 2015, 公益社団法人 精密工学会

3Dプリンタを用いたものづくり教室の実践
小澤 右京; 伊藤 伸英; 伊藤 吾朗; 小林 純也
精密工学会学術講演会講演論文集, 2015, 公益社団法人 精密工学会

421 6000系アルミニウム合金の長期負荷割れ(OS4-(5),OS4 オーガナイズドセッション≪材料・組織と加工≫)
青島 翔平; 楊 帆; 望月 健吾; 伊藤 吾朗; 車田 亮; 小林 純也
茨城講演会講演論文集, 2015, 一般社団法人 日本機械学会

418 高圧水素貯蔵容器用アルミニウム合金のスピニング加工性(OS4-(4),OS4 オーガナイズドセッション≪材料・組織と加工≫)
南條 郁弥; 小泉 彰平; 小林 純也; 伊藤 吾朗
茨城講演会講演論文集, 2015, 一般社団法人 日本機械学会

大学生主催による環境を考えたものづくりシステムの構築
大塚 明宏; 伊藤 伸英; 伊藤 吾朗; 小林 純也
精密工学会学術講演会講演論文集, 2014, 公益社団法人 精密工学会

451 タングステンの高温引張特性に及ぼすひずみ速度の影響
田能 正淳; 小林 純也; 伊藤 吾朗; 車田 亮; 向江 真悟
山梨講演会講演論文集, 2014, 一般社団法人 日本機械学会

高圧水素貯蔵容器用アルミニウム合金の高温変形特性に関する研究　　　　　　　　　　　　　　　
小林純也
茨城大学工学部付属教育研究センター 公開シンポジウム, 2014

Hydrogen Embrittlement Properties of 0.2-0.4%C Ultra High-Strength TRIP-Aided Bainitic Ferrite Steels with Hot Forging Process
北條 智彦; 小林 純也; 山本 浩介
材料とプロセス 日本鉄鋼協会 編, 17 Sep. 2013, 日本鉄鋼協会
20130917, 20130917

Cr添加した超高強度TRIP型マルテンサイト鋼の水素脆化特性
北條 智彦; 小林 純也; 杉本 公一
材料とプロセス 日本鉄鋼協会 編, 17 Sep. 2013, 日本鉄鋼協会

超高強度TRIP型マルテンサイト鋼板の優れた衝撃特性
小林 純也; 杉本 公一
材料とプロセス 日本鉄鋼協会 編, 17 Sep. 2013, 日本鉄鋼協会

Effects of Aluminum and Niobium on Impact Properties of Ultra High-Strength TRIP-aided Bainitic Ferrite Steels
HOJO Tomohiko; KOBAYASHI Junya; KAJIYAMA Tomohiro
津山工業高等専門学校紀要, 2012, 津山工業高等専門学校

317 窒素添加した超高強度低合金TRIP鋼板の遅れ破壊特性(機械材料・材料加工III)
北條 智彦; 小林 純也; 杉本 公一
中国四国支部総会・講演会 講演論文集, 2012, 一般社団法人 日本機械学会

713 N添加超高強度低合金TRIP鋼板の疲労特性(疲労強度特性,疲労損傷観察ならびに強度評価,オーガナイスドセッション1)
北條 智彦; 小林 純也; 杉本 公一
学術講演会講演論文集, 2012, 日本材料学会

Apr. 2022 - Present
茨城大学大学院 博士後期課程 複雑系システム工学専攻

Apr. 2020 - Present
茨城大学 工学部 機械システム工学科

Apr. 2015 - Present
茨城大学大学院 理工学研究科 機械システム工学専攻

Apr. 2025 - Mar. 2026
茨城大学 工学部 機械システム工学科

Apr. 2022 - Mar. 2024
茨城大学 工学部 機械システム工学科

Apr. 2022 - Mar. 2023
茨城大学大学院 理工学研究科

Apr. 2020 - Mar. 2023
茨城大学 工学部 機械システム工学科

Apr. 2020 - Mar. 2023
茨城大学 工学部 機械システム工学科

Apr. 2019 - Mar. 2022
茨城大学 工学部 機械システム工学科

Apr. 2015 - Mar. 2020
茨城大学 工学部 機械工学科

Apr. 2015 - Mar. 2020
茨城大学 工学部 機械工学科

Apr. 2015 - Mar. 2020
茨城大学 工学部 機械工学科

Apr. 2015 - Mar. 2017
茨城大学 工学部 機械工学科

2019 - Present, 日本銅学会

2016 - Present, 一般社団法人 日本機械学会

2012 - Present, The Japan Society for Technology of Plasticity

2009 - Present, The Iron and Steel Institute of Japan

セラミックスの高温変形及び接合に対する通電効果の原理解明　　　　　　　　　　　　　　　
Grant-in-Aid for Scientific Research (B)
Apr. 2020 - Mar. 2024

Analysis on the sites of existence and paths of migration for hydrogen in metallic materials for structural use by means of some visualization techniques　　　　　　　　　　　　　　　
Grant-in-Aid for Scientific Research (C)
Apr. 2020 - Mar. 2023

熱間圧延により残留オーステナイトを微細分散させた微細粒を有する超高強度低合金TRIP鋼の成形性　　　　　　　　　　　　　　　
Oct. 2018 - Mar. 2022

粒界析出組織制御によるアルミニウム合金の信頼性の向上　　　　　　　　　　　　　　　
Grant-in-Aid for Scientific Research (C)
Apr. 2017 - Mar. 2020

Suppression of environmental embrittlement in cold worked aluminum alloys with deformation-induced nano clusters
Grant-in-Aid for Scientific Research (B)
Ibaraki University
Apr. 2017 - Mar. 2020

2009-135875, 超高強度鋼製加工品及びその製造方法
杉本公一,小林純也,高橋輝久,荒井五朗

2010-270397, 高強度，高靭性リンクチェーンとその製造方法
石原智也,杉本公一,小林純也,伊奈大輝

2010-280858, 切欠き疲労強度に優れた高強度鋼製加工品とその製造方法
杉本公一, 小林純也, 荒井五朗, 高橋輝久, 伊奈大輝

2012-044373, TRIP型2相マルテンサイト鋼及びそれを用いた超高強度鋼製加工品(2相TM鋼)
杉本公一,小林純也,吉川伸麻,中島裕司,高橋輝久,荒井五朗

一般社団法人日本塑性加工学会 会報誌編集委員　　　　　　　　　　　　　　　
Planning etc
一般社団法人日本塑性加工学会, 01 Apr. 2024 - Present

一般社団法人日本鉄鋼協会 会報誌編集委員　　　　　　　　　　　　　　　
Planning etc
一般社団法人日本鉄鋼協会, 01 Apr. 2023 - Present

軽金属学会 アルミニウム中の水素と材料物性研究部会　　　　　　　　　　　　　　　
Academic research planning
一般社団法人軽金属学会, Apr. 2016 - Present

日本塑性加工学会東関東支部 企画・会計幹事　　　　　　　　　　　　　　　
Planning etc
01 Apr. 2014 - Present

学術部会創形創質工学部会運営委員会委　　　　　　　　　　　　　　　
Planning etc
一般社団法人日本鉄鋼協会, 01 Apr. 2023 - 31 Mar. 2025

日本機械学会関東支部茨城ブロック商議員　　　　　　　　　　　　　　　
Planning etc
一般社団法人日本機械学会 関東支部, 11 Apr. 2023 - 31 Mar. 2024

一般社団法人日本塑性加工学会 企画委員　　　　　　　　　　　　　　　
Planning etc
一般社団法人日本塑性加工学会, 01 Apr. 2018 - 31 Mar. 2023

日本アルミニウム協会 個別ロードマップ若手検討会 委員　　　　　　　　　　　　　　　
Planning etc
01 Apr. 2021 - 31 Mar. 2022