Hydrogen-promoted heterogeneous plastic strain and associated hardening effect in polycrystalline nickel under uniaxial tension

被引：1

作者：

Zhi, Huihui ^{[1
,2
]}

Ma, Zhaoxiang ^{[3
]}

Chen, Lin ^{[4
]}

Antonov, Stoichko ^{[5
]}

Su, Yanjing ^{[1
,2
]}

机构：

[1] Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Beijing, Peoples R China

[2] Univ Sci & Technol Beijing, Corros & Protect Ctr, Beijing 100083, Peoples R China

[3] Yantai Univ, Coll Nucl Equipment & Nucl Engn, Yantai 264005, Peoples R China

[4] China Univ Petr, Coll Safety & Ocean Engn, Beijing 102249, Peoples R China

[5] Max Planck Inst Eisenforschung GmbH, Dept Microstruct Phys & Alloy Design, D-40237 Dusseldorf, Germany

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2024年 / 894卷

关键词：

Hydrogen embrittlement; Plastic deformation; Geometrically necessary dislocation; Long-range internal stress; Electron backscatter diffraction; VACANCY FORMATION ENERGIES; DISLOCATION-TYPE EVOLUTION; REDUCING GRAIN-BOUNDARY; SOLUTE SEGREGATION; DEFORMED PD; DEFORMATION; DENSITY; STRESS; ALLOY; STEEL;

D O I：

10.1016/j.msea.2024.146190

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We deformed polycrystalline nickel and quantitatively revealed that hydrogen promotes the grain-scale plastic deformation heterogeneity by assisting generation and accumulation of geometrically necessary dislocations within grain interiors and at grain boundaries. Bauschinger tensile tests also confirmed that hydrogen enhances hetero-deformation induced stress, which is the global result of hydrogen-promoted heterogeneous plastic deformation in the entire samples.

引用

页数：5

共 39 条

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