Nb-V含量对模具钢微观组织及力学性能的影响  

Effect of Nb-V Content on Microstructure and Mechanical Properties of Die Steel

作　　者：邹新斌[1] 肖霞[1] 

机构地区：[1]江西机电职业技术学院,江西南昌330013

出　　处：《铸造技术》2013年第12期1605-1607,共3页Foundry Technology

基　　金：江西省省级课题基金资助项目(JXJG-12-35-8)

摘　　要：以Cr8冷作模具钢为研究对象,实验研究了不同淬火温度后模具钢的微观组织及淬火硬度。结果表明,Nb含量的增加不仅能提高MC共晶碳化物的析出温度和低温淬火硬度,而且能改变MC共晶碳化物类型,有利于促进材料二次硬化硬度的升高。本研究为冷作模具钢的成分优化及淬火工艺改善提供参考。Taking cold working die steel Cr8 as research object, the effects of different quenching temperature on the microstrucatre and hardness of the steel were studied. The results show that, the increase of the content of Nb can improve the precipitation temperature of eutectic carbide MC and the hardness after quenched at low temperature, and change the type of eutectic carbide MC to increase the hardness of the material after hardened by two times. This study can provide a reference for composition optimization and improving quenching process of cold work die steel.

关 键 词：模具钢材料 共晶碳化物 铸态组织 

分 类 号：TG142.1[一般工业技术—材料科学与工程]