0Cr18Ni9不锈钢新型复合固体渗碳工艺的研究  

Study on New Composite Solid Carburizing Process of 0Cr18Ni9 Stainless Steel

作　　者：田娜[1] 张欣昱 张凯 曹泽凝 TIAN Na;ZHANG Xinyu;ZHANG Kai;CAO Zening(School of Materials Science and Engineer,Xi*an University of Technology,Xi'an 710048,China)

机构地区：[1]西安理工大学材料科学与工程学院,陕西西安710048

出　　处：《热加工工艺》2022年第12期85-88,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(52171191)。

摘　　要：对利用超音速微粒轰击技术单面表面纳米化处理的0Cr18Ni9不锈钢分别进行单温和双温固体渗碳处理。采用金相组织截面观察和表面硬度检测研究了不同固体渗碳工艺对0Cr18Ni9不锈钢固体渗碳行为的影响。结果表明,表面纳米化可以提高0Cr18Ni9不锈钢固体渗碳的效率,且经600℃预渗2 h和850℃终渗4 h双温渗碳后,可在SFPB面获得渗层厚度为215μm、硬度高达613 HV的渗碳层,为实现不锈钢的简单高效固体渗碳处理提供了新方法。Mono-temperature and bi-temperature solid carburizing of 0Cr18Ni9 stainless steel with single surface nanocrystallization by supersonic fine particle bombardment(SFPB)were carried out. The effects of different carburizing processes on the solid carburizing behavior of 0Cr18Ni9 stainless steel were investigated by cross-sectional optical microstructure observation and surface hardness test. The results show that the surface nanocrystallization can improve the efficiency of solid carburization, and 0Cr18Ni9 stainless steel can obtain a carburized layer with hardness up to 613 HV and thickness of 215 μm on the SFPB surface after precarburizing at 600 ℃ for 2 h and final carburizing at 850 ℃ for 4 h, which provides a new approach for simple and efficient solid carburizing of stainless steel.

关 键 词：0Cr18Ni9不锈钢 表面纳米化 双温固体渗碳 

分 类 号：TG161[金属学及工艺—热处理] TG156.81[金属学及工艺—金属学]