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The environmental degradation behavior of FeNiMnCr high entropy alloy in high temperature hydrogenated water
Dong, Jiuyang1; Feng, Xingyu1; Hao, Xianchao2,3; Kuang, Wenjun1
Corresponding AuthorKuang, Wenjun(wjkuang66@gmail.com)
2021-11-01
Source PublicationSCRIPTA MATERIALIA
ISSN1359-6462
Volume204Pages:6
AbstractCo-free high entropy alloy (HEA) 28%Fe-27%Ni-27%Mn-18%Cr shows good irradiation resistance and could be a potential candidate for structural material in nuclear power industry. In this work, the environmental degradation behavior of this HEA was investigated in high temperature hydrogenated water. This HEA shows extensive intergranular cracking after constant extension rate tensile test, indicating that it is very susceptible to stress corrosion cracking (SCC) initiation. The microstructure analysis indicates that Mn and Cr diffuse outwards along the grain boundary during oxidation, inducing grain boundary migration. The Cr flux promotes the formation of Cr-enriched oxide layer above the grain boundary which prevents intergranular oxidation when the sample is unstressed. However, Mn is unstable in the oxide and tends to dissolve into the solution, making the oxide porous. The porous oxide fractures readily when stressed, inducing SCC initiation. (c) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
KeywordHigh entropy alloy Oxidation Corrosion Scanning transmission electron microscopy (STEM) Diffusion-induced grain boundary motion (DIGM)
Funding OrganizationMinistry of Science and Technology of China ; National Natural Science Foundation of China ; Young Talent Support Plan of Xi'an Jiaotong University
DOI10.1016/j.scriptamat.2021.114127
Indexed BySCI
Language英语
Funding ProjectMinistry of Science and Technology of China[2019YFA0209902] ; National Natural Science Foundation of China[51971172] ; Young Talent Support Plan of Xi'an Jiaotong University
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000690402200007
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/166836
Collection中国科学院金属研究所
Corresponding AuthorKuang, Wenjun
Affiliation1.Xi An Jiao Tong Univ, Ctr Adv Mat Performance Nanoscale CAMP Nano, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
2.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
3.ChineseAcad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Dong, Jiuyang,Feng, Xingyu,Hao, Xianchao,et al. The environmental degradation behavior of FeNiMnCr high entropy alloy in high temperature hydrogenated water[J]. SCRIPTA MATERIALIA,2021,204:6.
APA Dong, Jiuyang,Feng, Xingyu,Hao, Xianchao,&Kuang, Wenjun.(2021).The environmental degradation behavior of FeNiMnCr high entropy alloy in high temperature hydrogenated water.SCRIPTA MATERIALIA,204,6.
MLA Dong, Jiuyang,et al."The environmental degradation behavior of FeNiMnCr high entropy alloy in high temperature hydrogenated water".SCRIPTA MATERIALIA 204(2021):6.
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