热冲压工艺参数对22MnB5马氏体钢汽车B柱性能影响的有限元模拟  

Finite element simulation of influence of hot stamping process parameters on properties of 22MnB5 martensitic steel for automobile B-pillar

作　　者：王章忠[1] 巴志新[1] 李琦 刘永刚[3] 崔磊[3] 刘朗峰 董继武 Wang Zhangzhong;Ba Zhixin;Li Qi;Liu Yonggang;Cui Lei;Liu Langfeng;Dong Jiwu(School of Materials Science and Engineering,Nanjing Institute of Technology,Nanjing Jiangsu 211167,China;STARQ Y-TEC Corporation,Nanjing Jiangsu 211100,China;MA Steel Group,Maanshan Anhui 243003,China;Changan Mazda Automobile Co.,Ltd.,Nanjing Jiangsu 211100,China)

机构地区：[1]南京工程学院材料科学与工程学院,江苏南京211167 [2]南京星乔威泰克汽车零部件有限公司,江苏南京211100 [3]马鞍山钢铁股份有限公司,安徽马鞍山243003 [4]长安马自达汽车有限公司,江苏南京211100

出　　处：《金属热处理》2020年第5期221-228,共8页Heat Treatment of Metals

基　　金：南京市科技成果转化计划项目(201701202)。

摘　　要：通过有限元仿真软件Autoform分析了热冲压过程中工艺参数的变化对22MnB5马氏体钢B柱起皱、回弹、减薄、马氏体量以及强度的影响。结果表明:22MnB5马氏体钢B柱热冲压最优化工艺参数为加热温度930℃,冷却速率80℃/s。该工艺参数下,热冲压过程各处均完成马氏体转变,硬度分布均匀,材料减薄率较低,热冲压成形效果好,尺寸精度高,冲压件强度均大于1400 MPa。Influence of parameters on wrinkle,rebound,thinning,martensitic volume fraction and strength of 22MnB5 martensitic steel Bpillar during hot stamping process were studied by means of finite element analysis software Autoform. The results show that the optimum process parameters of hot stamping for 22MnB5 martensitic steel B-pillar are heating temperature of 930 ℃ and cooling rate of 80 ℃/s,with which,the martensite transformation of B-pillar is completed,its hardness distribution is uniform,the material thinning rate is low,the hot stamping forming effect is good,the size accuracy is high,and the strength of stamping workpieces is higher than 1400 MPa.

关 键 词：22MnB5马氏体钢 热冲压 Autoform软件 有限元模拟 

分 类 号：TG156[金属学及工艺—热处理]