Formation of strain-induced martensite in selective laser melting austenitic stainless steel

被引：108

作者：

Hong, Yuanjian ^{[1
]}

Zhou, Chengshuang ^{[1
]}

Zheng, Yuanyuan ^{[1
]}

Zhang, Lin ^{[1
]}

Zheng, Jinyang ^{[2
]}

Chen, Xingyang ^{[1
]}

An, Bai ^{[3
]}

机构：

[1] Zhejiang Univ Technol, Inst Mat Forming & Control Engn, Hangzhou 310014, Zhejiang, Peoples R China

[2] Zhejiang Univ, Inst Proc Equipment, Hangzhou 310027, Zhejiang, Peoples R China

[3] Natl Inst Adv Ind Sci & Technol, 16-1 Onogawa, Tsukuba, Ibaraki 3058569, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2019年 / 740卷

基金：

中国国家自然科学基金;

关键词：

Stainless steel; Strain-induced alpha ' martensite; Austenitic stability; Selective laser melting; MECHANICAL-PROPERTIES; HYDROGEN EMBRITTLEMENT; 316L; MICROSTRUCTURE; BEHAVIOR; ALLOY; PROPERTY;

D O I：

10.1016/j.msea.2018.10.121

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The austenitic stability of selective laser melted austenitic stainless steel was investigated by the tensile tests in the 80-300 K temperature range. The selective laser melting process greatly improved the yield strength, but severely suppressed the stain-induced alpha' martensitic transformation compared with the conventional austenitic stainless steel. The high density of low-angle grain boundaries and fine cellular microstructures were observed in the selective laser melted austenitic stainless steel, which suppressed dislocation slip and deformation twinning during deformation, resulting in the reduction in the nucleation sites of a' martensite and the enhancement of the austenitic stability.

引用

页码：420 / 426

页数：7

共 34 条

[1] Property evaluation of 304L stainless steel fabricated by selective laser melting [J].