AISI 316L不锈钢低温盐浴硬化处理  

Salt bath hardening process of AISI 316L stainless steel at low temperature

作　　者：江亮[1] 赵程[1] 

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061

出　　处：《金属热处理》2011年第6期101-103,共3页Heat Treatment of Metals

摘　　要：利用低温520℃盐浴硬化处理技术对AISI 316L奥氏体不锈钢进行了表面硬化处理,并对硬化层的组织和性能进行研究。试验结果表明,316L奥氏体不锈钢在520℃下处理3 h,即可获得具有S相结构特征的高耐蚀硬化层;在520℃以上盐浴硬化处理时,硬化层将会有铬的碳化物和氮化物析出,将会降低硬化处理后不锈钢表面的耐蚀性能。Austenitic stainless steel 316L was processed by low temperature salt bath to harden its surface.The microstructure and properties of the carburized layer were investigated.The results show that the S phase characterized high corrosion resistant hardening layer could be attained when the sample was treated at 520 ℃ for 3 h.When the nitrocarburizing temperature exceeds the critical values,the chromium carbide and nitride begin to precipitate.The corrosion resistance of the hardened steel surface is also weakened.

关 键 词：奥氏体不锈钢 低温盐浴硬化处理 硬度 耐蚀性 

分 类 号：TG156.8[金属学及工艺—热处理]