Tensile ductility and deformation mechanisms of a nanotwinned 316L austenitic stainless steel

被引：2
|
作者：
Y.Z.Zhang [1 ,2 ]
J.J.Wang [1 ,3 ]
N.R.Tao [1 ]
机构：
[1] Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences
[2] School of Materials Science and Engineering, University of Science and Technology of China
[3] University of Chinese Academy of Sciences
来源：
Journal of Materials Science & Technology | 2020年 / 36卷 / 01期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Nanotwinned; Stainless steel; Ductility; Deformation mechanism;
D O I：
暂无
中图分类号：
TG142.71 [不锈钢、耐酸钢];
学科分类号：
080502 ;
摘要：
A nanotwinned 316 L austenitic stainless steel was prepared by means of surface mechanical grinding treatment.After recovery annealing,the density of dislocations decreases obviously while the average twin/matrix lamella thickness still keeps in the nanometer scale.The annealed nanotwinned sample exhibits a high tensile yield strength of 771 MPa and a considerate uniform elongation of 8%.TEM observations showed that accommodating more dislocations and secondary twinning inside the nanotwins contribute to the enhanced ductility and work hardening rate of the annealed nanotwinned sample.
引用
收藏
页码：65 / 69
页数：5
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