Redistribution of C and N Atoms in High Nitrogen Martensitic Stainless Steel During Cryogenic Treatment
收藏中国科学院兰州化学物理研究所科学数据中心2023-05-22 更新2024-04-26 收录
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The redistribution of C and N atoms during cryogenic treatment is crucial for the microstructure evolution and properties of
high nitrogen martensitic steel. Here, the distinct redistribution behavior of C and N atoms in a martensitic stainless steel with
0.3 wt% C and 0.5 wt% N after cryogenic treatment were investigated by the atom probe tomography. Carbon clusters begin
to form after cryogenic treatment at−60 °C and gradually increase with the decrease of cryogenic treatment temperature.
While Mo–N and Cr–N pairs are homogeneously distributed in the matrix even after cryogenic treatment at −120 °C, and
then form enrichment phenomenon when the cryogenic temperature is deeply lowered to−190 °C. It is found that the distinct
redistributions of C and N atoms are associated with the diferent interaction energy between substitutional atoms and them.
The stronger interaction between Cr, Mo atoms and N delays the segregation of N during the cryogenic treatment.
提供机构：
中国科学院兰州化学物理研究所科学数据中心
创建时间：
2023-05-22
