Onset of plasticity of helium-implanted ferritic/martensitic steels during nanoindentation

Chen, Siwei; Wang, Yongming; Hashimoto, Naoyuki et al.

Philosophical Magazine Letters, 2014, 94(7), 433-438

Permalink : https://hdl.handle.net/2115/59456

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アクセス権
open access
URI
https://hdl.handle.net/2115/59456
タイトル
Onset of plasticity of helium-implanted ferritic/martensitic steels during nanoindentation
著者
Chen, Siwei ; Wang, Yongming ; Hashimoto, Naoyuki ; Ohnuki, Somei
著者名
Chen, Siwei
著者名
Wang, Yongming
著者名
Hashimoto, Naoyuki
e-Rad_Researcher
10142697
著者名
Ohnuki, Somei
言語
英語
キーワード
incipient plasticity
helium implantation
oxide particle
nanoindentation
発行日
2014-07
出版者
Taylor & Francis
収録物名
Philosophical Magazine Letters
巻(号)
94(7)
ページ
433-438
抄録
The onset of plasticity during nanoindentation is a new method to investigate the irradiation damage of structural materials in fission and fusion reactors. In this paper, nanoindentation experiment was carried out to helium implanted F82H-IEA and nano-sized oxide dispersion strengthened F82H-ODS steels for studying the elastic-plastic transition at a constant loading rate. The onset of plasticity shifted after helium implantation. By a statistical thermal activation model, activation volume was extracted to discuss the strength of barrier for dislocation motion. The results reveal an increase in the pinning force and number density of effective obstacles for dislocation motion in He-implanted F82H-IEA, and a decrease in the local pinning force without changing the density of effective obstacles in He-implanted F82H-ODS.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
権利情報
This is an Accepted Manuscript of an article published by Taylor & Francis in Philosophical Magazine Letters on July 2014, available online: http://www.tandfonline.com/10.1080/09500839.2014.921347
PISSN
0950-0839
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1080/09500839.2014.921347