Precipitation of σ-phase in high-nitrogen austenitic 18Cr-18Mn-2Mo-0.9N stainless steel during isothermal aging

被引：74
作者：
Lee, TH
Oh, CS
Lee, CG
Kim, SJ
Takaki, S
机构：
[1] Korea Inst Machinery & Mat, Dept Mat Proc, Chang Won 641010, South Korea
[2] Kyushu Univ, Higashi Ku, Fukuoka 8128581, Japan
来源：
SCRIPTA MATERIALIA | 2004年 / 50卷 / 10期
基金：
日本学术振兴会;
关键词：
stainless steels; precipitation; CALPHAD; nitrides; sigma (sigma)-phase;
D O I：
10.1016/j.scriptamat.2004.02.013
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Precipitation mechanism of sigma-phase in austenitic high-nitrogen steel (HNS) upon aging was investigated using electron microscopy and thermodynamic calculation. The precipitation sequence was found to be grain boundary Cr2N, cellular Cr2N and sigma-phase with aging time. It was concluded that the nitrogen-depleted zone near Cr2N induces the nucleation of sigma-phase. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1325 / 1328
页数：4
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