TWIP950在某新车型前纵梁的应用可行性研究  

Feasibility study of application for TWIP950 on front longitudinal beam of a new vehicle

作　　者：段吉超 杨冰[1] 战东平[2] 秦兴国 穆传坤 毛安[1] 张叮 Duan Jichao;Yang Bing;Zhan Dongping;Qin Xingguo;Mu Chuankun;Mao An;Zhang Ding(Dongfeng Motor Corporation Technical Center,Wuhan,430058,China;Northeastern University,Shenyang,110819,China)

机构地区：[1]东风汽车公司技术中心,武汉430058 [2]东北大学,沈阳110819

出　　处：《材料与冶金学报》2018年第1期62-68,共7页Journal of Materials and Metallurgy

摘　　要：本文对第二代AHSS典型钢种TWIP950的机械性能包括拉伸强度、n值、r值和烘烤硬化性进行了试验.采用1.5 mm厚度TWIP950替代1.6 mm厚度DC05进行轻量化设计的前纵梁正碰仿真结果表明,使用TWIP钢在减重6.25%的同时具有更佳的吸能效果.通过冲压仿真和现场试制对两种材料的冲压成形性进行了比较,结果表明TWIP950在具有更好成形性的同时也面临更大的回弹.总之,在模具设计时进行有效的回弹控制并保证钢板理想的边缘状态,TWIP950具备在前纵梁的轻量化应用可行性.Mechanical properties of TWIP950,a typical second generation of AHSS are studied,including uniaxial tension strength,n-value,r-value and bake hardenability.Frontal impact simulation of a lightweight design by replacing 1.6 mm thick DC05 on front longitudinal beam with 1.5 mm thick TWIP950 was carried out.The results showed that it has a better energy absorption effect and a weight reduction of 6.25%for TWIP950 to replace DC05.Stamping properties of TWIP950 and DC05 were determined by simulation and trial forming process.The results revealed that TWIP950 shows a better forming ability than DC05,but it has a higher springback.The authors believe that TWIP950 is an acceptable material for the front longitudinal beams to reduce the weight,if one can effectively control the springback.

关 键 词：TWIP950 机械性能 冲压 应力 碰撞 

分 类 号：TG38[金属学及工艺—金属压力加工]