Hydrogen-induced ductility loss of austenitic stainless steels for slow strain rate tensile testing in high-pressure hydrogen gas

Saburo Matsuoka, Junichiro Yamabe, Hisao Matsunaga

研究成果: 著書/レポートタイプへの貢献会議での発言

抄録

For slow strain rate tensile (SSRT) test in hydrogen gas, the degradation in relative reduction in area (RRA) of 300-series austenitic stainless steels is mainly attributed to hydrogen-assisted surface crack growth (HASCG) accompanied by quasi-cleavages. To establish novel criteria for authorizing various austenitic stainless steels for use in high-pressure gaseous hydrogen, a mechanism of the HASCG should be elucidated. At first, this study performed SSRT tests on six types of austenitic stainless steels, Types 304, 316, 316L, 306 (hi-Ni), 304N2 and 304 (N), in high-pressure hydrogen gas and showed that the RRAs were successfully quantified in terms of a newly-proposed nickel-equivalent equation. Then, to elucidate the microscopic mechanism of the HASCG, elasto-plastic fracture toughness (JIC), fatigue crack growth (FCG) and fatigue life tests on Types 304, 316 and 316L were carried out in high-pressure hydrogen gas. The results demonstrated that the SSRT surface crack grew via the same mechanism as for the JIC and fatigue cracks, i.e., these cracks successively grow with a sharp shape under the loading process, due to local slip deformations near the crack tip by hydrogen. Detailed observations of SSRT surface cracks on Types 304 and 316L were also performed, exhibiting that the onset of the HASCG occurred at the true strain of 0.1 or larger in high-pressure hydrogen gas.

元の言語英語
ホスト出版物のタイトルMaterials Structure and Micromechanics of Fracture VIII
編集者Pavel Sandera
出版者Trans Tech Publications Ltd
ページ259-264
ページ数6
ISBN(印刷物)9783038356264
DOI
出版物ステータス出版済み - 1 1 2017
イベント8th International Conference on Materials Structure and Micromechanics of Fracture, MSMF8 - Brno, チェコ共和国
継続期間: 7 27 20167 29 2016

出版物シリーズ

名前Solid State Phenomena
258 SSP
ISSN(電子版)1662-9779

その他

その他8th International Conference on Materials Structure and Micromechanics of Fracture, MSMF8
チェコ共和国
Brno
期間7/27/167/29/16

Fingerprint

austenitic stainless steels
Tensile testing
Austenitic stainless steel
ductility
strain rate
Ductility
Strain rate
Hydrogen
Gases
surface cracks
hydrogen
gases
Crack propagation
cracks
tensile tests
Cracks
fatigue life
crack tips
Fatigue crack propagation
Nickel

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

これを引用

Matsuoka, S., Yamabe, J., & Matsunaga, H. (2017). Hydrogen-induced ductility loss of austenitic stainless steels for slow strain rate tensile testing in high-pressure hydrogen gas. : P. Sandera (版), Materials Structure and Micromechanics of Fracture VIII (pp. 259-264). (Solid State Phenomena; 巻数 258 SSP). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/SSP.258.259

Hydrogen-induced ductility loss of austenitic stainless steels for slow strain rate tensile testing in high-pressure hydrogen gas. / Matsuoka, Saburo; Yamabe, Junichiro; Matsunaga, Hisao.

Materials Structure and Micromechanics of Fracture VIII. 版 / Pavel Sandera. Trans Tech Publications Ltd, 2017. p. 259-264 (Solid State Phenomena; 巻 258 SSP).

研究成果: 著書/レポートタイプへの貢献会議での発言

Matsuoka, S, Yamabe, J & Matsunaga, H 2017, Hydrogen-induced ductility loss of austenitic stainless steels for slow strain rate tensile testing in high-pressure hydrogen gas. : P Sandera (版), Materials Structure and Micromechanics of Fracture VIII. Solid State Phenomena, 巻. 258 SSP, Trans Tech Publications Ltd, pp. 259-264, 8th International Conference on Materials Structure and Micromechanics of Fracture, MSMF8, Brno, チェコ共和国, 7/27/16. https://doi.org/10.4028/www.scientific.net/SSP.258.259
Matsuoka S, Yamabe J, Matsunaga H. Hydrogen-induced ductility loss of austenitic stainless steels for slow strain rate tensile testing in high-pressure hydrogen gas. : Sandera P, 編集者, Materials Structure and Micromechanics of Fracture VIII. Trans Tech Publications Ltd. 2017. p. 259-264. (Solid State Phenomena). https://doi.org/10.4028/www.scientific.net/SSP.258.259
Matsuoka, Saburo ; Yamabe, Junichiro ; Matsunaga, Hisao. / Hydrogen-induced ductility loss of austenitic stainless steels for slow strain rate tensile testing in high-pressure hydrogen gas. Materials Structure and Micromechanics of Fracture VIII. 編集者 / Pavel Sandera. Trans Tech Publications Ltd, 2017. pp. 259-264 (Solid State Phenomena).
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