雒设计,王荣,严长亮,陈尧

• 1:西安石油大学材料科学与工程学院
• 2:中国石油天然气集团公司管材研究所
• 3:北京科技大学材料科学与工程学院

摘要(Abstract)：

采用金相显微镜、扫描电镜、能谱分析、透射电镜和性能测试等方法,研究了固溶温度对22Cr双相不锈钢显微组织和性能的影响。结果表明:在950～1150℃范围,实验钢中α、γ两相含量与固溶温度呈近似直线关系;材料的显微硬度(HV)和强度(σb)先降后升,在1050℃时达到最小值;当固溶温度为950℃,组织中出现了σ相,σ相是导致22Cr双相不锈钢塑性、韧性下降的主要原因;随着固溶温度的升高,Cr、Mo的分配系数K变小,Ni的分配系数K增大,表明合金元素在α和γ相中浓度差别变小。

关键词(KeyWords)： 22Cr双相不锈钢;固溶温度;σ相;分配系数

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 雒设计,王荣,严长亮,陈尧

DOI: 10.13289/j.issn.1009-6264.2010.08.013

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