摘要
基于有限元分析,以6082铝合金为研究对象,采用DEFORM-3D分析了90~150°模具内角范围时等通道转角挤压(ECAP)过程中的载荷-行程曲线与应力及应变分布。结果表明,当模具内角为90°时,试样获得的等效应力和等效应变最大,塑性变形程度最强;随着模具内角增大,试样挤压过程中载荷值明显下降,试样中等效应力和等效应变减小,等效应变分布均匀性提高。
The load-displacement curve, stress and strain distribution of 6082 aluminum alloy deformed by equal channel angular pressing (ECAP) for different die inner angles (90-150°) were investigated through the finite element simulation by DEFROM-3D software. The results show that the equivalent stress and strain in sample are maximum when the die inner angle is 90°, and the degree of plastic deformation is also the highest; The load value, equivalent stress and strain decrease with the increase of die inner angle, whereas the distribution uniformity of effective strain increases.
作者
张忠明
任倩玉
姚祎
徐春杰
薛龙
ZHANG Zhongming1,2, REN Qianyu1, YAO Yi1, XU Chunjie1, XUE Long2(1. School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China; 2. Beijing Municipal Key Laboratory of Optical Equipment Technology, Beijing Institute of Petrochemical Technology, Beijing 102617, Chin)
出处
《铸造技术》
CAS
2018年第3期617-619,共3页
Foundry Technology
基金
国家自然科学基金(51275051)
光机电装备技术北京市重点实验室开放课题(KF2013-01)资助项目