摘要
分别对车身覆盖件用IF钢、DP 590钢和6016铝合金进行了研究,采用Jmat-Pro热力学软件计算热力学平衡状态下的相演变规律,测试了力学性能和成形极限曲线,并用扫描电子显微镜观察了微观组织。结果表明,IF钢与6016铝合金的屈服强度相当,DP 590强度明显高于IF钢和6016铝合金;三种材料的n值在同一水平,IF钢的r值远超DP 590钢和铝合金;双向拉伸应变状态,DP 590成形性略高于IF钢,并且随应变量的增大,二者之间的差距也呈现增加的趋势,6016铝合金的成形能力基本为IF钢和DP 590钢的二分之一。
IF steel, DP590 steel and 6016 aluminum of auto-body panels were studied. Microstructure evolution at thermodynamic equilibrium was calculated by Jmat-Pro software. Mechanical properties and forming limit diagram were tested. SEM microstructure was investigated. The results indicate that yield strength of IF steel and 6016 aluminum has little difference, and tensile strength of DP 590 steel is apparently higher than that of IF steel and 6016 aluminum. The n value of different materials are at the same level, and the r value of IF steel is much superior than that of other materials. Forming limit of DP590 steel is a little more than that of IF steel at biaxial tension state, and has an enhancing trend with the increasing of strain. The formability of 6016 aluminum is one-half that of IF steel and DP590 steel.
作者
李辉
张华
王文武
祝贞凤
江海涛
LI Hui;ZHANG Hua;WANG Wenwu;ZHU Zhenfeng;JIANG Haitao(College of Engineering, Yantai Nanshan University, Yantai 265700, China;National Engineering Research Center for Plastic Working of Aluminum Alloys, Shandong Nanshan Aluminum Co. Ltd. , Yantai 265713, China;Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083, China)
出处
《有色金属工程》
CSCD
北大核心
2017年第6期21-24,共4页
Nonferrous Metals Engineering
关键词
汽车轻量化
力学性能
成形极限
微观组织
automotive lightweight
mechanical property
forming limit
microstructure
