Local crack arrestablity of hydrogen-related intergranular fracture in as-quenched martensitic steel

Akinobu Shibata¹, Ivan Gutierrez-Urrutia¹, Akiko Nakamura¹, Taku Moronaga¹, Kazuho Okada¹, Yazid Madi², Jacques Besson², Toru Hara¹

¹National Institute for Materials Science, Japan; ²Mines Paris-PSL, France

Beneficial impacts of solute hydrogen against embrittlement in Fe-Cr-Ni austenitic steels

Yuhei Ogawa¹, Osamu Takakuwa², Kaneaki Tsuzaki¹, Akinobu Shibata¹

¹National Institute for Materials Science (NIMS), Japan; ²Kyushu University, Japan

In situ neutron diffraction analysis of the deformation mechanism in Hydrogen-charged Fe-24Cr-19Ni-based austenitic stainless steel

Tatsuya Ito¹, Yuhei Ogawa², Wu Gong¹, Wenqi Mao¹, Takuro Kawasaki¹, Kazuho Okada², Akinobu Shibata², Stefanus Harjo¹

¹Japan Atomic Energy Agency, Japan; ²National Institute for Materials Science, Japan

First-principles study on the hydrogen absorption energy in Fe-Cr-Ni systems: Dis-synergy effect of Cr and Ni atoms

Junichiro Moriyama¹, Osamu Takakuwa², Masatake Yamaguchi^3,4

¹Graduate school of Mechanical Engineering, Kyushu university; ²Department of Mechanical Engineering, Kyushu university; ³Center for Computational Science and e-Systems, Japan Atomic Energy Agency; ⁴Department of Materials Science and Engineering, The University of Tokyo

Role of shot peening in hydrogen embrittlement resistance of tempered martensitic steels

Magdalena Eskinja¹, Gerald Winter², Holger Schnideritsch², Jürgen Klarner², Gregor Mori¹

¹Chair of General and Analytical Chemistry,Montanuniversität Leoben, Franz Josef-Straße 18, 8700, Leoben, Austria; ²voestalpine Tubulars GmbH&Co KG, Alpinestraße 17, 8652, Kindberg-Aumuehl, Austria

MICROSTRUCTURAL ORIGINS OF ENHANCED RESISTANCE TO H-ASSISTED FATIGUE CRACK GROWTH IN AUSFORMED AND TEMPERED MARTENSITIC STEELS

Rama Srinivas Varanasi¹, Motomichi Koyama¹, Timothee Redarce², Kosei Kobayashi³, Hiroshi Kakinuma¹, Akinobu Shibata⁴, Hisao Matsunaga^2,5, Eiji Akiyama¹

¹Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577 Japan; ²Department of Mechanical Engineering, Kyushu University, Motooka 744, Fukuoka, 819-0395, Japan; ³Department of Materials Science, Tohoku University, Aramaki, Aoba-ku, Sendai 299-8570, Japan; ⁴National Institute for Materials Science, Tsukuba 305-0047, Japan; ⁵Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), Kyushu University, Motooka 744, Fukuoka, 819-0395, Japan

The role of martensite in hydrogen embrittlement of post-processed L-PBF 316L stainless steel

Liesbet Deconinck¹, Pedro A. Ferreirós², Zaiqing Que², Roy Johnsen¹, Xu Lu¹

¹Norwegian University of Science and Technology, Norway; ²VTT Technical Research Centre of Finland, Finland