ZGCr28铸钢组织和性能研究  

Study on Microstructure and Properties of ZGCr28 High-chromium Cast Steel

作　　者：程巨强[1] 刘志学[1] 王元辉[1] 

机构地区：[1]西安工业学院材料与化工学院,陕西西安710032

出　　处：《铸造技术》2006年第2期156-159,共4页Foundry Technology

摘　　要：研究了ZGCr28高铬铸钢的铸态、不同温度正火和不同温度回火热处理的组织和性能。结果表明，ZGCr28铸态硬度较低，正火加热温度为1040℃时空冷铸件具有较高的硬度，100-200℃回火高铬铸钢具有良好的韧性，铸态和热处理后的组织为铁素体、（Fe·Cr）23C6碳化物和少量的残余奥氏体。提出了ZGCr28高铬铸钢的最佳热处理工艺。Microstructure and mechanical properties of ZGCr28 cast steel at different normalizing temperature and tempering temperature heat treatment were studied. The results show that the hardness of ZGCr28 cast steel is lower at as-cast and ZGCr28 cast steel has higher hardness after normalizing at 1 040 ℃ and good toughness after tempering at 100-200 ℃. The microstructure of ZGCr28 cast steel is ferrite, （Fe · Cr）23C8 type carbide and a small amount of austenite at as-cast and various heat treatment. The optimum heat treatment is proposed for ZGCr28 cast steel.

关 键 词：ZGCr28铸钢 热处理 组织 性能 

分 类 号：TG113[金属学及工艺—物理冶金]