期刊
SCRIPTA MATERIALIA
卷 135, 期 -, 页码 54-58出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2017.03.029
关键词
High-entropy alloy; Hydrogen embrittlement; Tensile test; Nanoindentation; Thermal desorption spectroscopy
类别
资金
- National Research Foundation of Korea (NRF) grants - Ministry of Science, ICT & Future Planning (MSIP) [2014M2A8A1030385, 2015R1A5A1037627]
- Convergence Agenda Program (CAP) of the Korea Research Council of Fundamental Science and Technology
- National Research Council of Science & Technology (NST), Republic of Korea [CAP-11-05-KRISS] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2015R1A5A1037627, 2014M2A8A1030385] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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