赵卫民,唐静,李小双,夏琪良,王文臣,李丹

• 1:中国石油大学(华东)材料科学与工程学院
• 2:青岛丰东热处理有限公司

摘要(Abstract)：

利用光学显微镜、X射线衍射、电子探针和扫描电镜等研究了2205双相不锈钢经420℃和380℃气体渗氮和氮碳共渗处理后的组织。结果表明：渗氮和氮碳共渗都可使2205双相不锈钢表层的奥氏体(γ)和铁素体(α)转变为膨胀奥氏体相(γ_N),且相变层厚度随处理温度的升高而增大，但420℃处理时γ_N相会受热分解析出新相CrN。相同处理温度下，γ相比α相的相变层厚度大，且渗氮时的这种差异较氮碳共渗更为明显。γ相和α相向γ_N相转变过程的差异以及渗碳和温度对氮扩散的影响共同导致了不同工艺处理的相变层的显著差异。

关键词(KeyWords)： 双相不锈钢;渗氮;氮碳共渗;相变

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 赵卫民,唐静,李小双,夏琪良,王文臣,李丹

DOI: 10.13289/j.issn.1009-6264.2022-0385

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