王良,杨茗凯,胡议文,周培山,郑华林,王斌

• 1:西南石油大学新能源与材料学院
• 2:西南石油大学机电工程学院
• 3:国家知识产权局专利局专利审查协作四川中心

摘要(Abstract)：

采用光学显微镜、显微硬度计和电化学工作站等研究了2205双相不锈钢经不同温度保温不同时间后的显微组织及性能，并分析了其经不同工艺热处理后的γ和α两相比例和析出相的变化。结果表明：2205双相不锈钢初始状态下α和γ相含量分别为41.2%和58.8%。保温时间相同时，随着热处理温度的升高，γ相含量减少，σ相含量先增加后减少，硬度增加，腐蚀电位先降低后增加。保温温度相同时，随着保温时间的延长(0.5～2 h),γ相和σ相含量增加，γ相含量增幅为2.43%～3.87%,σ相含量增幅为0.05%～0.08%,晶粒有长大趋势，硬度逐渐降低，腐蚀电位总体呈降低趋势。当加热温度为950和1000℃时，硬度随保温时间增加而降低的幅度较明显。σ相含量及α/γ比例增加是造成2205双相不锈钢耐腐蚀性能下降的主要原因。

关键词(KeyWords)： 2205双相不锈钢;热处理;显微组织;硬度;耐蚀性

Abstract:

Keywords:

基金项目(Foundation): 南充市-西南石油大学市校科技战略合作专项(23XNSYSX0003);; 西南石油大学课外开放实验项目(2022KSZ05023)

作者(Author): 王良,杨茗凯,胡议文,周培山,郑华林,王斌

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