摘要
通过对316L奥氏体钢进行4种不同温度的离子渗氮处理,并对渗氮试样进行金相、扫描、XRD和电化学检测,进而对其检测结果进行对比分析,揭示了不同渗氮温度对316L不锈钢表面渗氮层组织和性能的影响规律。结果表明:经过450℃渗氮的试样,其硬度最高,耐腐蚀性最好,渗氮层和分界层均匀性最好。此外,初步判断,渗氮过程中,S相的形成和分解是个动态过程,二者同时进行。在450℃下S相的形成速度明显大于分解速度,从而使其试样的综合性能最好。
The ion nitriding treatment of 316L austenitic steel at four different temperatures is investigated,and the metallographic,scanning,XRD and electrochemical tests of the nitriding samples are carried out,with the results being compared and analyzed.The influence of different nitriding temperatures on the structure and properties of the nitriding layer on the surface of 316 L stainless steel is revealed.After 450℃nitriding,the samples have the highest hardness,the best corrosion resistance and the best uniformity of nitriding layer and boundary layers.Furthermore,it is preliminarily judged that the formation and decomposition of S phase is a dynamic process during nitriding,both of which are carried out at the same time.Under 450℃S the formation speed of the phase is obviously larger than the decomposition speed,which makes the comprehensive performance of the sample best.
作者
刘兰兰
张道达
吴孝泉
LIU Lanlan;ZHANG Daoda;WU Xiaoquan(Jiangxi Mechanical Science Institute,Nanchang 330002,China;Jiangxi Manufacturing Vocational and Technical College,Nanchang 330095,China)
出处
《南昌大学学报（理科版）》
CAS
北大核心
2021年第6期615-620,共6页
Journal of Nanchang University(Natural Science)
基金
江西省科技厅重点研发计划项目(20212BBE53044)
江西省科技厅科技计划项目(20202BBEL53025)
江西省教育厅科学技术项目(GJJ161465)
江西省教育厅科学技术项目(GJJ191425)
南昌市模具表面处理与加工制造技术重点实验室(2021-NCZDSY-003)。
关键词
离子渗氮
奥氏体不锈钢
渗氮层组织
耐腐蚀性能
S相
ion nitriding
austenitic stainless steel
nitriding layer structure
corrosion resistance
S phase
