磁控电渣重熔对LD冷作模具钢电渣锭组织及性能的影响  

Effect of magnetic-controlled electroslag remelting on microstructure and properties of LD cold working die steel

作　　者：李强[1] 夏智斌 齐文涛 孙楚雄 沈喆[1] 郑天祥[1] 钟云波[1] LI Qiang;XIA Zhi-bin;QI Wen-tao;SUN Chu-xiong;SHEN Zhe;ZHENG Tian-xiang;ZHONG Yun-bo(State Key Laboratory of Advanced Special Steel,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海大学省部共建高品质特殊钢冶金与制备国家重点实验室

出　　处：《模具工业》2019年第12期64-67,73,共5页Die & Mould Industry

基　　金：“十三五”国家重点研发计划项目（2016YFB0300401）;国家自然科学基金项目（U1860202,U1732276,50134010,51704193）;上海市科学技术委员会基金项目（13JC1402500,15520711000）

摘　　要：研究了横向稳恒磁场对磁控电渣重熔LD冷作模具钢微观组织和力学性能的影响,分析了电渣锭的碳化物微观形貌、冲击韧性和维氏硬度的变化。研究结果表明:在电渣重熔过程中施加横向稳恒磁场能够有效地细化电渣锭凝固组织,减小碳化物的尺寸以及提升电渣锭的维氏硬度,从而提升电渣产品的质量。The current study investigated the influence of transverse static magnetic field(TSMF) on microstructure and properties of LD cold workingdie steel by magnetic-controlled electroslag remelting(MC-ESR). The microstructure of carbides, impact toughness and Rockwell hardness of the ESR ingots were analyzed. The results revealed that the presence of magnetic field was beneficial for solidification and carbides microstructure refinement as well as Rockwell hardness improvement. Finally, the quality of electroslag products was improved.

关 键 词：电渣重熔 稳恒磁场 碳化物微观组织 冲击韧性 维氏硬度 

分 类 号：TG156[金属学及工艺—热处理]