Influence of RE-Mg Alloy Addition on the Microstructure and Performance of Cold Work Die Steel

摘要：

　　The influence of rare earth magnesium on the microstructure in Cr12Mo1V1 cold work die steel was investigated in present study,based on the production process of electric arc furnace–LF refining – VD vacuum treating molded casting.The rare earth magnesium alloy was fed into molten steel as cored wire at the end of the VD treating.Carbide morphology and high temperature mechanical properties of the steel was analysized and shows the grain size decreases,the carbides are refined and diffusion appears after the treatment of rare earth magnesium.And the results of high temperature tensile test shows that fracture elongation and reduction of necking area are all ameliorated with rare earth magnesium addition.So the high-temperature toughness of as-cast steel was obviously improved by the rare earth magnesium treatment.

关键词： cold work die steel rare earth magnesium high-temperature toughness microstructure carbides

作者: Wei GONG Cheng WANG Haidong WANG Zhouhua JIANG

作者单位: School of Materials and Metallurgy,Northeastern University,Shenyang 110819,China

会议类型: 国际会议

会议名称: the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)

会议地点: 北京

会议语种:英文

页码: 1000-1003

在线出版日期: 2015-05-12（万方平台首次上网日期，不代表论文的发表时间）