Effect of titanium and rare earth microalloying on microsegregation,eutectic carbides of M2 high speed steel during ESR process

作     者：Fuxing Yin Lu Wang Zhixia Xiao Jianhang Feng Lin Zhao Fuxing Yin;Lu Wang;Zhixia Xiao;Jianhang Feng;Lin Zhao

作者机构：School of Materials Science and EngineeringHebei University of TechnologyTianjin 300130China Research Institute for Energy Equipment MaterialsHebei University of TechnologyTianjin 300130China Tianjin Key Laboratory of Materials Laminating Fabrication and Interfacial Controlling TechnologyTianjin 300130China Central Iron and Steel Research InstituteBeijing 100081China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2020年第38卷第9期

页      面：1030-1038,I0005页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 080601[工学-冶金物理化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project supported by the Natural Science Foundation-Steel and Iron Foundation of Hebei Province(E2019202482) the Hebei Province Education Department Science and Technology Research Project(QN2018034) the Tianjin Science and Technology Support Program(18YFZCGX00220) 

主　　题：Microsegregation Morphology Eutectic carbides High speed steel Electroslag remelting Rare earths 

摘      要：The effects of RE and Ti microalloying during electroslag remelting(ESR)process on the microsegregation and morphology of eutectic M2C carbides in M2 high speed steel were *** results show that the addition of 0.2 wt%RE can alleviate the segregation of C,W,Mo,V and Cr,while the morphology of eutectic M2C carbides hardly *** microalloying with the addition of 0.5 wt%Ti has the lowest degree of microsegregation due to the improvement of primary dendrites by the effective heterogeneous nucleating agent of(Ti,V)(C,N)*** addition of Ti makes the mo rphology of M2C carbides change from rod-like or maze-like shape into a coarse feathery shape,exhibiting anisotropic facet growth *** the microalloying of 0.2 wt%RE and 0.5 wt%Ti,the segregation of the main metal alloying elements is slightly more severe than that of the addition of only RE or *** the combined action of RE and Ti,the feathery eutectic M2C becomes thinner and shorter and tends to be isolated or distributed in a discontinuous network.