Hydrogen distribution and segregation in hydrogen-charged S30408 after fracture analyzed via scanning Kelvin probe force microscopy
Hydrogen distribution and segregation in hydrogen-charged S30408 after fracture analyzed via scanning Kelvin probe force microscopy
复制标题
通过扫描开尔文探针力显微镜分析充氢 S30408 断裂后的氢分布和偏析
DOI:
10.1016/j.apsusc.2020.147050
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发表时间:
2020-06
影响因子:
6.7
通讯作者:
Hua Zhengli
中科院分区:
文献类型:
--
作者:
Shang Juan;Hua Zhengli
Scanning Kelvin probe force microscopy has employed to investigate hydrogen distribution and segregation in S30408 stainless steel after elongated to fracture. Results reveal that hydrogen-charged S30408 undergoes severe hydrogen embrittlement, and hydrogen-induced cracks occur in martensite (α’) and near the boundaries between α’ and austenite (γ). Hydrogen gathers in the γ near the strain-induced α’ due to the excess hydrogen in the α’. Furthermore, many hydrogen atoms are trapped in α’. The hydrogen segregation in α’ or near the phase boundaries between α’ and γ is one of the reasons for the cracks appearing at these positions.
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