Hydrogen embrittlement of additively manufactured AlCoCrFeNi2.1 eutectic high-entropy alloy

被引：40

作者：

Wan, Di ^{[1
]}

Guan, Shuai ^{[2
]}

Wang, Dong ^{[1
]}

Lu, Xu ^{[1
]}

Ma, Jun ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Mech & Ind Engn, Richard Birkelandsvei 2B, N-7491 Trondheim, Norway

[2] Hong Kong Polytech Univ, Adv Mfg Technol Res Ctr, Dept Ind & Syst Engn, Hung Hom,Kowloon, Hong Kong, Peoples R China

来源：

CORROSION SCIENCE | 2022年 / 195卷

关键词：

High-entropy alloy (HEA); Tensile test; Hydrogen embrittlement; Additive manufacturing; Electron backscattered diffraction (EBSD); Electron channeling contrast imaging (ECCI); AUSTENITIC STAINLESS-STEEL; MECHANICAL-PROPERTIES; HIGH-STRENGTH; ASSISTED CRACKING; MICROSTRUCTURE; DISLOCATION; PLASTICITY; DUCTILITY; FRACTURE; DEFORMATION;

D O I：

10.1016/j.corsci.2021.110007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

AlCoCrFeNi2.1 eutectic high-entropy alloy (HEA) was fabricated in as-cast and additively manufactured (AM) states. The hydrogen embrittlement susceptibility of both materials was investigated through in-situ uniaxial tensile test. Combining several advanced high-resolution scanning electron microscopy (SEM)-based techniques, the deformation and hydrogen embrittlement behavior have been intensively discussed. Interfacial cracking along both phase boundaries and grain boundaries are found to be responsible for the hydrogen-assisted fracture of this material. The cracking susceptibility has a dependence on the manufactured phase morphology. The orientation relationship between the phases and the misorientation between grains also have a significant impact on the hydrogen-induced cracks.

引用

页数：14

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