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Influence of Hydrogen Absorption on Stacking Fault of Energy of a Face-Centered Cubic High Entropy Alloy
- Kim, Han-Jin;
- Cho, Min-Kyung;
- Kim, Gyeungho;
- Lee, Seung-Yong;
- Jo, Min-Gu;
- ... Lee, Joonho;
- 외 2명
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35초록
Hydrogen-induced variation of stacking fault energy (SFE) of a CrMnFeCoNi high-entropy alloy (HEA) was quantitatively evaluated by transmission electron microscopy (TEM) using weak-beam dark-field (WBDF) technique. Width of Shockley partial dislocations turned out to increase after hydrogen absorption, which indicates that hydrogen decreases the SFE of the alloy: from 31.5 +/- 3.5 to 22.5 +/- 2.5 mJm(-2) by introduction of hydrogen into the lattice with approximate concentration of 115 wppm. This report provides the first direct observation of stacking faults under the influence of hydrogen in a face-centered cubic metallic structure.
키워드
High entropy alloy; Hydrogen embrittlement; Stacking fault energy; Weak-beam dark-field; TEMPERATURE-DEPENDENCE; MECHANICAL-PROPERTIES; STAINLESS-STEELS; ELASTIC-MODULI; EMBRITTLEMENT; RESISTANCE; MICROSTRUCTURE; COEFFICIENT; TENSILE
- 제목
- Influence of Hydrogen Absorption on Stacking Fault of Energy of a Face-Centered Cubic High Entropy Alloy
- 저자
- Kim, Han-Jin; Cho, Min-Kyung; Kim, Gyeungho; Lee, Seung-Yong; Jo, Min-Gu; Kim, Hayoung; Suh, Jin-Yoo; Lee, Joonho
- 발행일
- 2022-11
- 유형
- Article
- 권
- 28
- 호
- 11
- 페이지
- 2637 ~ 2645