铸造技术2017，Vol.38Issue(6)：1371-1375,5.DOI:10.16410/j.issn1000-8365.2017.06.032
数值模拟模具外角对2017铝合金ECAP变形的影响
Numerical Simulation of Influence of Outer Corner Angle on ECAP of 2017 Aluminum Alloy
摘要
Abstract
The thermomechanical coupled numerical simulation of equal channel angular pressing for 2017 aluminum alloy was carried on by rigid-plastic finite element method.The effect of the outer corner angle (0～50°) on variation of extrusion load,equivalent strain and its homogeneity as well as the sample temperature was studied.The results show that,with the increase of outer corner angle,the maximum extrusion load and the equivalent strain decreases abruptly at first,and then decreases slowly and the tendency changes mildly after the outer corner angle is higher than 30°.Whereas,the equivalent strain homogeneity increases firstly and then decreases slightly with the increase of outer corner angle and it is the best at 20°.In addition,with the increase of outer corner angle,the sample temperature decreases steadily.关键词
等通道转角挤压(ECAP)/模具外角/数值模拟/2017铝合金Key words
equal channel angular pressing (ECAP)/outer corner angle/numerical simulation/2017 aluminum alloy分类
金属材料引用本文复制引用
张忠明,姚祎,徐春杰,薛龙..数值模拟模具外角对2017铝合金ECAP变形的影响[J].铸造技术,2017,38(6):1371-1375,5.基金项目
国家自然科学基金(51275051)和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 （51275051）
