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