Grain Boundary Strengthening in High Mn Austenitic Steels

被引：0
|
作者：
Jee-Hyun Kang
Shanghong Duan
Sung-Joon Kim
Wolfgang Bleck
机构：
[1] RWTH Aachen University,Steel Institute
[2] Pohang University of Science and Technology (POSTECH),Graduate Institute of Ferrous Technology (GIFT)
来源：
Metallurgical and Materials Transactions A | 2016年 / 47卷
关键词：
Austenitic Stainless Steel; Dislocation Source; Dislocation Emission; Interstitial Concentration; Boundary Strengthen;
D O I：
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中图分类号：
学科分类号：
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.
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页码：1918 / 1921
页数：3
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