铸造技术2017，Vol.38Issue(7)：1666-1669,4.DOI:10.16410/j.issn1000-8365.2017.07.037
不同温度下AZ31镁合金等通道转角挤压工艺模拟分析
Finite Element Analysis of Equal-Channel Angular Pressing for Magnesium Alloy Under Different Temperature
摘要
Abstract
The ECAP process for AZ31 magnesium alloy was numerically simulated using Deform-3D finite element software at the extrusion temperature of 250～400 ℃,and the change rule of extrusion load,effective strain and equivalent strain was analyzed during the forming process.The results show that the forming process of AZ31 magnesium alloy is divided into three stages:no obvious deformation stage,the rapid growth stage and stable deformation stage.With the increase of extrusion temperature,the extrusion load decreases significantly,the equivalent stress of the sample is uneven distribution,the equivalent stress at mould comer part is large,there is a large stress concentration.At the same time,the equivalent strain increases gradually,it is the largest at the angle of shear zone.After ECAP processing,the strain of the sample in the center is the largest and decreases from inside to outside.Upper sample equivalent strain is larger and the lower equivalent strain is relatively small.The microstructure has good uniformity.关键词
AZ31镁合金/等径角挤压/有限元分析Key words
AZ31 magnesium alloy/ECAP/finite element analysis分类
金属材料引用本文复制引用
姜炳春,王淑萍,吴耀宗,张秀妹..不同温度下AZ31镁合金等通道转角挤压工艺模拟分析[J].铸造技术,2017,38(7):1666-1669,4.基金项目
广东省青年创新人才类项目(2015KQNCX192) （2015KQNCX192）
广东科技学院重点项目(GKY-2015KYZD-3) （GKY-2015KYZD-3）
广东科技学院一般项目(GKY-2015KYYB-9) （GKY-2015KYYB-9）
