热处理对电冶钢结硬质合金DGJW50显微组织的影响  

The Influence of Heat Treatment to DJGW50 Steel on the Microstructure

作　　者：宋雪峰[1] 尤显卿[1] 郑玉春[1] 马建国[2] 黄曼平[2] 

机构地区：[1]合肥工业大学,材料科学与工程学院,安徽合肥230009 [2]安徽建筑工程学院,安徽合肥230022

出　　处：《硬质合金》2005年第1期10-14,共5页Cemented Carbides

基　　金：安徽省教育厅重点资助科研项目(2003KJ016ZD)

摘　　要：对DGJW50合金不同热处理状态下的组织进行了研究。结果表明:由于电冶熔铸及后续热处理加热温度很高,使碳化物相溶解并析出,从而使不同热处理的组织具有各自的特点。此材料具有三种类型的碳化物,一类碳化物与二类碳化物的性质与物理状态均不相同。本工作还测试分析了合金微观组成单元的显微硬度和不同热处理下的宏观洛氏硬度及冲击韧性。In this paper, the microstructure of various heat treatment of DGJW50 has been studied. Studying results show that the microstructure of different heat treatment have respective properties by virtue of the dissolution and separation of carbides which is caused by high temperature of electroslag melting and casting technology and following heat treatments. This alloy has three type of carbides, the properties and physical conditions differ greatly from the first class carbide to the second class carbide. At the same time, the micro-hardness of the alloy on different microstructure units have been tested, besides macro-rockwell hardness and impact toughness of this material.

关 键 词：钢结硬质合金 显微组织 热处理状态 加热温度 电冶熔铸 碳化物相 物理状态 冲击韧性 洛氏硬度 显微硬度 测试分析 析出 

分 类 号：TG156[金属学及工艺—热处理]