超硬高速钢M2Si的热处理工艺  

Heat treatment technology of M2Si superhard high speed steel

作　　者：饶晓晓[1] 朱小清[2] 张红霞[1] 罗成[1] 

机构地区：[1]湖北汽车工业学院材料工程系,湖北十堰442002 [2]东风汽车公司刃量具厂,湖北十堰442023

出　　处：《金属热处理》2011年第7期58-60,共3页Heat Treatment of Metals

摘　　要：对M2S i超硬高速钢进行了热处理工艺试验,通过硬度测试和显微组织观察分析了淬火温度对晶粒度、基体硬度和红硬性的影响。结果表明,提高淬火温度以增加溶入奥氏体中的碳化物的含量可有效提高钢的红硬性,但随着淬火温度进一步提高,碳化物大量溶解使奥氏体晶粒长大,对钢的其它性能产生不利影响,故M2S i钢适宜的淬火温度为1180~1210℃。The heat treatment technology test of M2Si superhard high speed steel was done.The effects of quenching temperature on grain size,matrix hardness and red hardness were analyzed by hardness test and microstructure observation.The results show that the red hardness can be effectively improved by increasing quenching temperature to promote carbide to dissolve into austenite.But a great number of carbide dissolving into austenite makes the grain size of austenite increase,and deteriorates the other mechanical properties of the M2Si steel with further increase in quenching temperature.So suitable quenching temperature of the M2Si steel is 1180-1210 ℃.

关 键 词：M2Si超硬高速钢 淬火 碳化物 晶粒度 红硬性 

分 类 号：TG156[金属学及工艺—热处理]