残余奥氏体对中锰白口铸铁力学性能和抗磨性的影响  

Effect of Residual Austenite on Mechanical Properties and Abrasion Resistance of Medium Mn White Cast Iron

作　　者：姚三九[1] 王兆昌[2] 

机构地区：[1]武汉汽车工业大学材料学院,湖北武汉430070 [2]北京科技大学材料学院,北京100083

出　　处：《钢铁研究学报》2000年第6期42-45,共4页Journal of Iron and Steel Research

摘　　要：研究了残余奥氏体对中锰白口铸铁力学性能和抗磨性的影响。结果表明 ,冰冷处理是改变显微组织中残余奥氏体量和马氏体量的可靠工艺。随显微组织中残余奥氏体量的减少 ,材料的硬度提高、冲击韧性降低。残余奥氏体含量为 30 %时 ,模拟试验的抗磨性最好。用于制造中小型球磨机衬板的中锰白口铸铁 ,合适的残余奥氏体含量为 30 %～ 35 % ,此时可以达到硬度、韧性和抗磨性的最佳配合。Effect of residual austenite on mechanical properties and abrasion resistance of medium Mn white cast iron was investigated. The results shown that the cryogenic treatment is a reliable technology to change amounts of γ R and martensite in microstructure with the decrease of γ R, the hardness of the material increases, but the impact toughness drops. At γ R=30 %, the abrasion resistance obtained by simulation wear experiment is the best. Being used as medium small sized ball mill liner material, the appropriate content of γ R in microstructure of medium Mn white cast iron is 30 %～35 % with a best combination of hardness, impact toughness and abrasion resistance.

关 键 词：残余奥氏体 抗磨性 冲击韧性 中锰白口铁 

分 类 号：TG143.1[一般工业技术—材料科学与工程]