Strain field of interstitial hydrogen atom in body-centered cubic iron and its effect on hydrogen-dislocation interaction

Wang, Shuai; Takahashi, Keisuke; Hashimoto, Naoyuki et al.

Scripta Materialia, 2013, 68(5), 249-252

Permalink : https://hdl.handle.net/2115/52114

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アクセス権	open access
URI	https://hdl.handle.net/2115/52114
タイトル	Strain field of interstitial hydrogen atom in body-centered cubic iron and its effect on hydrogen-dislocation interaction
著者	Wang, Shuai ; Takahashi, Keisuke ; Hashimoto, Naoyuki ; Isobe, Shigehito ; Ohnuki, Somei
著者名 Wang, Shuai
著者名 Takahashi, Keisuke
著者名 Hashimoto, Naoyuki
e-Rad_Researcher 10564370 著者名 Isobe, Shigehito
e-Rad_Researcher 10142697 著者名 Ohnuki, Somei
言語	英語
キーワード	Density functional theory
	Hydrogen embrittlement
	Iron alloys
	Stress relaxation
発行日	2013-03
出版者	Elsevier
収録物名	Scripta Materialia
巻(号)	68(5)
ページ	249-252
抄録	Effect of hydrogen in body-centered cubic iron is explored by using the density function theory. Hydrogen atoms increase the concentration of free electrons in the simulation cell and have bonding interaction with Fe atom. Caused by anisotropic strain components of hydrogen atoms in the tetrahedral sites, elastic interaction for hydrogen with screw dislocation has been found. The dependence of hydrogen-screw dislocation interaction on hydrogen concentration is confirmed by repeated stress relaxation tests.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	1359-6462
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.scriptamat.2012.10.026