表面机械研磨对1Cr17Ni7不锈钢组织和力学性能的影响  

Effect of Surface Mechanical Attrition on Microstructure and Mechanical Properties of 1Cr17Ni7 Stainless Steel

作　　者：李朱锋 顾海 吴国庆 LI Zhufeng;GU Hai;WU Guoqing(School of Mechanical Engineering,Nantong Institute of Technology,Nantong 226002,China;Engineering College,Mokwon University,Daejeon008242,SouthKorea)

机构地区：[1]南通理工学院机械工程学院,江苏南通226002 [2]牧园大学工学院,韩国大田008242

出　　处：《热加工工艺》2022年第22期94-96,共3页Hot Working Technology

基　　金：南通理工学院中青年科研骨干培养计划项目(ZQNGG304);江苏省重点建设学科资助项目(苏教研[2016]9号);江苏省高等学校自然科学研究面上项目(19KJB510055);南通市科技计划(指导性)项目(JCZ18003);江苏省高校品牌专业资助项目(苏教高函[2020]9号)。

摘　　要：采用OM、硬度测试、拉伸性能测试等研究了不同时间的表面机械研磨对1Cr17Ni7不锈钢显微组织和力学性能的影响。结果表明:未经过表面机械研磨的1Cr17Ni7钢的组织主要为奥氏体和马氏体,组织较为均匀。随着表面机械研磨时间的增加,试验钢组织中马氏体含量逐渐增加,表面机械研磨时间10 min的1Cr17Ni7钢晶粒中有较为明显的马氏体滑移带出现。随着表面研磨时间的增加,1Cr17Ni7钢硬度、抗拉强度逐渐升高,伸长率逐渐降低。表面机械研磨10 min时1Cr17Ni7钢硬度提升已经接近饱和,其表面和心部的硬度分别比未进行表面机械研磨试样的硬度提高了92.7%和36.6%。The effects of surface mechanical attrition at different time on the microstructure and mechanical properties of1Cr17Ni7 stainless steel were studied by OM, hardness test and tensile property test. The results show that the microstructure of 1Cr17Ni7 steel without surface mechanical attrition treatment is mainly austenite and martensite, and the microstructure is relatively uniform. With the increase of surface mechanical attrition treatment time, the content of martensite in the structure increases gradually. There are obvious martensitic slip bands in the grains of 1Cr17Ni7 steel for 10 min surface mechanical attrition treatment time. With the increase of surface grinding time, the hardness and tensile strength of 1Cr17Ni7 steel increase gradually, and the elongation decreases gradually. The hardness of 1Cr17Ni7 steel is nearly saturated after surface mechanical attrition treatment for 10 min, and the hardness of its surface and core is 92.7% and 36.6% higher than that of the sample without surface mechanical attrition treatment, respectively.

关 键 词：1Cr17Ni7不锈钢 表面机械研磨处理 显微组织 力学性能 

分 类 号：TG178[金属学及工艺—金属表面处理]