7N01铝合金热变形行为研究  

Hot Deformation Behaviors of 7N01 Aluminum Alloy

作　　者：韦小凤[1] 何宇棋 张婷[1] 符跃春[1] 

机构地区：[1]有色金属及材料加工新技术教育部重点实验室广西大学材料科学与工程学院,广西南宁530004

出　　处：《装备制造技术》2015年第4期10-12,共3页Equipment Manufacturing Technology

摘　　要：采用Gleeble-3500热模拟机研究了7N01铝合金在变形温度为300℃~450℃、应变速率为0.01s^1s-1时的等温压缩热变形行为。结果表明:7N01铝合金的流变应力均在一个较小的应变时达到峰值,且随着应变速率的提高和变形温度的降低,流变应力峰值增加。在低应变速率(0.01s-1)时,7N01铝合金中出现了再结晶组织,随着变形温度的升高,再结晶晶粒数目增多且尺寸变大。7N01铝合金的显微硬度随着变形温度的升高和应变速率的增大而增大。The isothermal compression deformation tests of 7N01 aluminum alloy were performed on Gleeble-3500 thermal simulation machine in the temperature range of 300℃-450℃ and the strain rate of 0.01 s^-1 - 1 s^-1 The results show that the flow stress of 7N01 aluminum alloy exhibits a peak value at a critical strain tress, and the peak stress increases with increasing strain rate and decreasing deformation temperature. At the lower strain rate （0.01 s^-1）, recrystallization grains were observed in the 7N01 aluminum alloy, which number and size increase with increasing deformation temperature. The micro-hardness of 7N01 aluminum alloy increases with the increasing of deformation

关 键 词：7N01铝合金 热压缩 流变应力 微观组织 显微硬度 

分 类 号：TG146.2[一般工业技术—材料科学与工程]