冷冲模钢深冷处理时的相变  

The Phase Transformations of Cold Die Steels During the Cryogenic Treatment

作　　者：蒋正行[1] 李玉昌[1] 秘国芳 

机构地区：[1]河北工学院机械二系 [2]石家庄内燃机配件厂

出　　处：《河北工业大学学报》1990年第3期50-57,共8页Journal of Hebei University of Technology

摘　　要：本文主要通过 X 射线衍射实验,研究冷冲模钢(Cr12、Cr12MoV)深冷处理时的相变.研究指出,深冷处理不仅使残余奥氏体转变为马氏理体,还使碳从马氏体和残余奥氏体中脱溶,以碳化物形式析出.深冷处理提高了钢的硬度和耐磨性,从而提高了模具的使用寿命.In this paper the phase transformations of cold die steels(Cr12,Cr12MoV) during the cryogenic treatment by means of the X-ray diffraction experiments have been studied.It indicates that the cryogenic treatment not only makes the retained austenites change into martensites but also makes the carbon precipitate from martensites and retained austenites and forms the precipited carbide.The hardness,wear resistance and service life of dies have been increased by the cryogenic treatment.

关 键 词：冷冲模钢 析出碳化物 深冷处理 相变 X 射线衍射 残余奥氏体 耐磨性 马氏体 

分 类 号：T-55[一般工业技术]