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.
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页数：5
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