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.
出处
《材料科学》
2016年第1期59-64,共6页
Material Sciences
基金
广西科技计划项目(编号:桂科重14122001-5、1598001-2)。
