Formation mechanism of MnS inclusion during heat treatments and its influence on the pitting behavior of 316L stainless steel fabricated by laser powder bed fusion

被引：0
|
作者：
Zhiwei Duan
Cheng Man
Hongzhi Cui
Zhongyu Cui
Xin Wang
机构：
[1] SchoolofMaterialsScienceandEngineering,OceanUniversityofChina
来源：
Corrosion Communications | 2022年 / 7卷 / 03期
关键词：
D O I：
暂无
中图分类号：
TG142.71 [不锈钢、耐酸钢]; TG665 [光能加工设备及其加工]; TG156 [热处理工艺];
学科分类号：
摘要：
The formation mechanism of MnS inclusions during heat treatment and its effect on the pitting behavior of laser powder bed fusion(L-PBF)-fabricated 316L stainless steel(SS) were investigated. MnS inclusions precipitated at the grain boundaries of the samples, and the spherical oxide particles can become nucleation sites. The quantity and size of the MnS inclusions increased with prolonged heating. Compared with the as-received sample, the pitting of heat-treated L-PBF-fabricated 316L SS samples was mainly induced by the newly generated MnS inclusions rather than the fabricated gas pores and extended along the grain boundaries; this caused the dramatic pitting resistance deterioration.
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页码：12 / 22
页数：11
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