7A04铝合金热变形过程微观组织演变  

Microstructure evolution of 7A04 during hot deformation process

作　　者：肖艳红[1] 郭成[1] 郭小艳[1] 

机构地区：[1]西安交通大学机械工程学院,西安710049

出　　处：《塑性工程学报》2012年第3期94-97,共4页Journal of Plasticity Engineering

摘　　要：以热模拟压缩实验和金相实验为基础,探讨7A04铝合金热压缩变形过程中应变速率和变形温度对流变应力和微观组织的影响规律。通过对实验数据进行回归分析,构建了该合金热压缩变形过程的微观组织演化模型。将建立的材料模型导入有限元软件DEFORM-3D中,对热压缩过程进行数值模拟。结果表明,所建立的微观组织演化模型可以很好的预测7A04合金在热变形过程中晶粒尺寸的演化规律。Based on the hot compression experiment and metallographic test,the effect of the deformation temperature and strain rate on the flow stress and microstructure of 7A04 Al alloy in the hot compression process was discussed.The microstructure evolution model was developed through regression analysis of experimental data.Numerical simulation on the hot compression process was conducted using DEFOEM-3D to verify the developed material model.The results show that the established microstructure evolution model can be used to forecast the grain size evolution of 7A04 Al alloy during hot deformation process.

关 键 词：7A04铝合金 热压缩变形 流变应力 微观组织 晶粒尺寸 

分 类 号：TG376[金属学及工艺—金属压力加工]