Near-surface self-resistance hydrogen effect of eutectic high-entropy alloy AlCoCrFeNi2.1

被引：0

作者：

Feng, Daochen ^{[1
,2
]}

Hu, Minghui ^{[1
]}

Zheng, Wenjian ^{[1
,2
]}

Wang, Yu ^{[1
]}

Ma, Yinghe ^{[1
,2
]}

Ren, Sendong ^{[1
,2
]}

Tan, Dapeng ^{[1
]}

Yang, Jianguo ^{[1
,2
]}

机构：

[1] Zhejiang Univ Technol, Sch Mech Engn, Hangzhou 310023, Peoples R China

[2] Zhejiang Univ Technol, Engn Res Ctr Proc Equipment & Remfg, Minist Educ, Hangzhou 310023, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 31卷

基金：

中国国家自然科学基金;

关键词：

Eutectic high -entropy alloy AlCoCrFeNi 2.1; Self -resistance hydrogen effect; Microstructure evolution; Near; -surface; Hydrogen embrittlement; SUPERABUNDANT VACANCY; MECHANICAL-PROPERTIES; GRAIN-BOUNDARY; HIGH-DUCTILITY; HIGH-STRENGTH; PRECIPITATION; EMBRITTLEMENT; SEGREGATION; MICROSTRUCTURE; STABILITY;

D O I：

10.1016/j.jmrt.2024.06.092

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of engineering application studies related to hydrogen damage has been carried out for the eutectic highentropy alloy (HEA) AlCoCrFeNi2.1 with excellent comprehensive properties. This work mainly introduces the element segregation and microstructure evolution phenomenon near the surface phase boundary and around the precipitated phase found in the hydrogen damage experiment of the material. Studies have shown that the evolution of the near-surface phase boundary microstructure of HEAs caused by hydrogen charging has a great influence on the hydrogen trap density inside the alloy. The "self-resistance hydrogen effect" is produced, that is, hydrogen-induced microstructure evolution causes the effect of delayed hydrogen diffusion. In this phenomenon, the synergy between hydrogen atoms and vacancies and dislocations on the alloy surface is crucial.

引用

页码：472 / 480

页数：9

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