Grain refinement effect on hydrogen embrittlement resistance of an equiatomic CoCrFeMnNi high-entropy alloy

Motomichi Koyama, Kenshiro Ichii, Kaneaki Tsuzaki

研究成果: ジャーナルへの寄稿記事

抄録

We investigated the grain refinement effect on the resistance to hydrogen embrittlement in an equiatomic CoCrFeMnNi high-entropy alloy. In a 100 MPa hydrogen gas pre-charging condition, grain refinement to 1.9 μm improved the hydrogen embrittlement resistance in terms of the strength-elongation balance. In particular, the tensile strength of the grain refined high-entropy alloy did not decrease by hydrogen uptake. However, when the σ phase formed at a relatively low temperature, both the strength and elongation decreased due to hydrogen charging.

元の言語英語
ページ(範囲)17163-17167
ページ数5
ジャーナルInternational Journal of Hydrogen Energy
44
発行部数31
DOI
出版物ステータス出版済み - 6 21 2019

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hydrogen embrittlement
Hydrogen embrittlement
Grain refinement
Entropy
entropy
Hydrogen
elongation
charging
Elongation
hydrogen
tensile strength
Tensile strength
Gases
gases
Temperature

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

これを引用

Grain refinement effect on hydrogen embrittlement resistance of an equiatomic CoCrFeMnNi high-entropy alloy. / Koyama, Motomichi; Ichii, Kenshiro; Tsuzaki, Kaneaki.

:: International Journal of Hydrogen Energy, 巻 44, 番号 31, 21.06.2019, p. 17163-17167.

研究成果: ジャーナルへの寄稿記事

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