标题:
5083铝合金热压缩过程的有限元模拟研究FEM Simulation of Hot Compression of 5083 Aluminum Alloy
作者:
刘栩, 李严法, 李江宇, 戴青松, 邓运来
关键字:
5083铝合金, 热压缩, 有限元分析, 变形不均匀性5083 Aluminum Alloy, Hot Deformation, Finite Element Analysis, Deformation Ununiformity
期刊名称:
《Material Sciences》, Vol.6 No.1, 2016-01-28
摘要:
采用Gleeble-3800热模拟试验机对5083铝合金进行热压缩实验，并利用有限元分析软件DEFOM-3D对5083铝合金在变形温度为400℃应变速率为1 s−1，变形温度为400℃应变速率为10 s−1，变形温度为500℃应变速率为1 s−1条件下热压缩过程进行数值模拟，利用后处理程序，分析了合金内部的应变场、应变速率场、应力场和温度场变化。研究表明：5083铝合金热压缩过程具有明显的变形不均匀性，试样分为易变形区、难变形区和自由变形区；为了合理预测再结晶晶粒尺寸，需对实验数据进行修正。
The hot compression of 5083 aluminum alloy was carried out on Gleeble-3800 thermal simulator. The hot compression process at a strain rate of 1 s−1 and temperature 400˚C, strain rate of 10 s−1 and temperature 400˚C, strain rate of 1 s−1 and temperature 500˚C of 5083 aluminum alloy was simulated in the finite element analysis software DEFOM-3D. The variation and distribution of strain, strain rate, stress and temperature in the compressed work piece were analyzed by the post-processing procedures. The results show that the hot compression of 5083 aluminum alloy exhibits a nonuniform characteristic and the specimen is divided into easy deformation zone, hard deformation zone and the free deformation zone. The temperature has gone up during the hot de-formation process, and the experimental data need to be modified in order to reasonably predict recrystallization grain size.