张凯强,唐广波,李激光

• 1:钢铁研究总院特殊钢研究所
• 2:辽宁科技大学材料与冶金学院

摘要(Abstract)：

基于Thermo-Calc热力学计算软件,研究了600℃、650℃时马氏体耐热不锈钢中Cr、W、Mo合金元素含量变化对析出相的影响。计算结果表明:钢中析出相主要为M_(23)C_6、金属间化合物Laves相和σ相。温度和合金元素Cr、W、Mo含量变化对M_(23)C_6碳化物析出影响较小,对Laves相和σ相的析出影响较大,W、Mo含量在一定范围内变化时会析出CHI相。随Cr含量增加,Laves相析出量先保持不变,但当σ相开始析出后线性减少。温度和W含量变化对σ相析出量影响较大。随Mo含量增加,Laves相析出量线性增加;600℃时当σ相开始析出后,Laves相析出量缓慢增加;650℃时无σ相析出,但当CHI相大量析出后,Laves相析出量急剧减少。

关键词(KeyWords)： 马氏体耐热不锈钢;计算热力学;合金元素;析出相

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划资助项目(2016YFB0700505)

作者(Author): 张凯强,唐广波,李激光

DOI: 10.13289/j.issn.1009-6264.2016-X254

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