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Cited 78 time in webofscience Cited 87 time in scopus
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Resistance of CoCrFeMnNi high-entropy alloy to gaseous hydrogen embrittlement

Authors
Zhao, YakaiLee, Dong-HyunSeok, Moo-YoungLee, Jung-APhaniraj, M. P.Suh, Jin-YooHa, Heon-YoungKim, Ju-YoungRamamurty, UpadrastaJang, Jae-Il
Issue Date
Jul-2017
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
High-entropy alloy; Hydrogen embrittlement; Tensile test; Nanoindentation; Thermal desorption spectroscopy
Citation
SCRIPTA MATERIALIA, v.135, pp.54 - 58
Indexed
SCIE
SCOPUS
Journal Title
SCRIPTA MATERIALIA
Volume
135
Start Page
54
End Page
58
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/19563
DOI
10.1016/j.scriptamat.2017.03.029
ISSN
1359-6462
Abstract
The influence of hydrogen on the mechanical behavior of the CoCrFeMnNi high-entropy alloy (HEA) was examined through tensile and nanoindentation experiments on specimens hydrogenated via gaseous and electrochemical methods. Results show that the HEA's resistance to gaseous hydrogen embrittlement is better than that of two representative austenitic stainless steels, in spite of the fact that it absorbs a larger amount of hydrogen than the two steels. Reasons for this were discussed in terms of hydrogen-enhanced localized plasticity mechanism and the critical amount of hydrogen required for it These were further substantiated by additional experiments on electrochemically charged specimens.
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COLLEGE OF ENGINEERING (SCHOOL OF MATERIALS SCIENCE AND ENGINEERING)
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