Grain Boundary Strengthening in High Mn Austenitic Steels

被引：20
作者：
Kang, Jee-Hyun [1 ,2 ]
Duan, Shanghong [1 ]
Kim, Sung-Joon [2 ]
Bleck, Wolfgang [1 ]
机构：
[1] Rhein Westfal TH Aachen, Steel Inst, Intzestr 1, D-52072 Aachen, Germany
[2] Pohang Univ Sci & Technol POSTECH, GIFT, Pohang 37673, South Korea
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2016年 / 47A卷 / 05期
关键词：
INDUCED PLASTICITY STEELS; TWIN BOUNDARIES; NITROGEN; SIZE; SEGREGATION; BEHAVIOR; DEFORMATION;
D O I：
10.1007/s11661-016-3399-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Hall-Petch relationship is investigated to find the yield strengths of two high Mn austenitic steels. The Hall-Petch coefficient is found to depend on the overall C concentration and cooling rate, which suggests that the C concentration at the grain boundaries is an important factor. The pile-up model suggests that C raises the stress for the dislocation emission, while the ledge model predicts that C increases the density of ledges which act as dislocation sources. (C) The Minerals, Metals & Materials Society and ASM International 2016
引用
收藏
页码：1918 / 1921
页数：4
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