热处理对中铬铸铁组织和性能的影响  

Influences of Heat Treatment on Structure and Property of Medium-chromium Cast Iron

作　　者：李海鹏[1] 梁春永[1] 王立辉[2] 陈学广[1] 

机构地区：[1]河北工业大学材料学院,天津300130 [2]军事交通学院汽车工程系,天津300161

出　　处：《热加工工艺》2006年第10期40-42,46,共4页Hot Working Technology

摘　　要：研究了时效处理、淬火加热温度和回火温度对中铬铸铁组织性能的影响。结果表明:时效处理可降低或消除试块内应力,使硬度下降、冲击韧度上升;淬火加热温度在950℃时,中铬铸铁的组织形态和综合力学性能最佳;回火温度为350～400℃时,中铬铸铁具有较好的综合力学性能。Influences of aging treatment, quenching temperature and tempering temperature on structure and property of medium-chromium cast iron were investigated. The results indicate that aging treatment can decrease or eliminate internal stress of specimen, which results in hardness falling and impact toughness rising. As adopting quenching temperature of 950℃ and tempering temperature between 350 and 400℃, medium-chromium cast iron acquires better structure and synthetic mechanical properties.

关 键 词：中铬铸铁 时效处理 淬火温度 回火温度 组织和性能 

分 类 号：TG156.92[金属学及工艺—热处理] TG143.8[金属学及工艺—金属学]