热处理对冷作模具钢Cr12MoV微观组织及其力学性能的影响  

Effect of Heat Treatment on Microstructure and Mechanical Properties of Cold Working Die Steel Cr12MoV

作　　者：廖婷婷 杨华东 杨何 刘浩茏 陈飞 唐清明 丁义超[1] LIAO Tingting;YANG Huadong;YANG He;LIU Haolong;CHEN Fei;TANG Qingming;DING Yichao(School of Materials and Environmental Engineering,Chengdu Technological University,Chengdu 611730,China;Panzhihua Shuigang Hongfa Mining Co.,Ltd.,Panzhihua 617112,China)

机构地区：[1]成都工业学院材料与环境工程学院,成都611730 [2]攀枝花水钢红发矿业有限公司,四川攀枝花617112

出　　处：《成都工业学院学报》2023年第6期8-12,共5页Journal of Chengdu Technological University

基　　金：四川省科技计划重大研发项目“高钛球团矿绿色高性能制造技术和关键装备研发及应用示范”。

摘　　要：为研究Cr12MoV的微观组织对其力学性能的影响,采用钢光板Cr12MoV为原材料,通过箱式电阻炉高温退火(860℃),淬火(950/980℃)和回火(210/520℃)制得样品后,采用X射线衍射仪、洛氏硬度、冲击试验机和金相显微镜等进行材料学分析检测。结果表明,最优的热处理方案为860℃退火+980℃淬火+520℃回火,此时组织中有着细小晶粒的索氏体和均匀析出的碳化物,有着较高的硬度(75 HRC)和最大的冲击韧性(36.07 J)。In order to study the influence of Cr12MoV microstructure on its mechanical properties,steel plate Cr12MoV was used as raw material,and samples were prepared by high-temperature annealing(860℃),quenching(950/980℃)and tempering(210/520℃)in box resistance furnace.X-ray diffractometer,Rockwell hardness,impact testing machine and metallographic microscope were used for material analysis.The results show that the optimal heat treatment scheme is annealing at 860℃,quenching at 980℃and tempering at 520℃.At this time,there are fine grained sortensite and uniformly precipitated carbides in the microstructure,and it has high hardness(75 HRC)and maximum impact toughness(36.07 J).

关 键 词：冷作模具钢 CR12MOV 热处理工艺 微观组织 力学性能 

分 类 号：TB331[一般工业技术—材料科学与工程]