摘要
研究了D2钢在不同温度淬火后的硬度变化,以及深冷处理对其硬度的影响,并对其显微组织进行了分析。结果表明:在1 010～1 040℃淬火,硬度达到最佳值。经深冷处理,残余奥氏体转变成马氏体使硬度上升,深冷处理后回火弥散析出超细微碳化物,且深冷处理时间越长,弥散析出的超细微碳化物越多。
The hardness variation of D2 steel under different quenching temperature and the influence of subzero treatment on hardness of D2 steel were studied, and its microstructure was analyzed as well. The results show that the hardness value reaches the best point when the temperature of quenching is 1010 ～1040℃. During the subzero treatment, retained austenite turns to martensite,which make hardness value arise. The ultrafine carbonide precipitates after tempered. The longer subzero treatment, the more the ultrafine carbonide precipitation.
出处
《热加工工艺》
CSCD
北大核心
2006年第24期49-51,共3页
Hot Working Technology
关键词
D2钢
热处理
深冷处理
硬度
D2 steel
heat treatment
subzero treatment
hardness
