3104铝合金的流变应力行为与动态再结晶  

Flow Stress Behavior and Dynamic Recrystallization of 3104 Aluminum Alloy

作　　者：胡卓超[1] 张德芬[1] 黄涛[1] 左良[1] 王福[1] 

机构地区：[1]东北大学材料与冶金学院金属材料研究所,辽宁沈阳110004

出　　处：《机械工程材料》2005年第2期6-9,20,共5页Materials For Mechanical Engineering

基　　金：国家重点基础研究发展规划资助项目(G1999064908)

摘　　要：对3104铝合金在350～500℃以0.005～0.1s-1的形变速率进行压缩,真应变为50%,随后立即水冷。采用真应力 真应变曲线和TEM研究其高温压缩变形中的流变应力行为和它的动态再结晶过程。结果表明:3104铝合金为正应变速率敏感材料,具有稳态流变的特征。流变应力随着变形速率的增加而增加,随着变形温度的升高而降低。在低形变温度(350℃)和低形变速率(0.035s-1)下,该合金发生动态再结晶。The flow stress behavior of 3104 aluminum alloy during hot compression deformation was studied by isothermal compression test at Gleeble-(1500) thermal-mechanical simulator. The dynamic recrystallization mechanism during hot compress was examined by the true stress-strain curves and TEM. The results show that both strain rate and deforming temperature controls the flow stress. The flow stress decreases with the increase of deforming temperature and increases with the increase of strain rate. Furthermore, dynamic recrystallization occurs higher temperature and lower strain rate or at lower temperature and higher strain rate.

关 键 词：3104铝合金 流变应力 动态再结晶 应变速率 

分 类 号：TG111.7[金属学及工艺—物理冶金]