论文部分内容阅读
采用Gleeble-3500热模拟机进行圆柱体压缩试验,研究了新型铝青铜合金在变形温度为650～950℃、应变速率为0.01～5s-1、真应变为0～0.8条件下的流变应力特征。结果表明:应变速率为0.01和5s-1时,铝青铜合金首先出现加工硬化,流变应力达到峰值后趋于平稳,表现出动态回复的特征;应变速率为0.1和1s-1时,合金发生了局部动态再结晶;可用Zener-Hollomon参数的双曲正弦形式来描述新型铝青铜合金热压缩变形时的流变应力行为。
The cylinder compression test was carried out on a Gleeble-3500 thermal simulator. The flow stress characteristics of the new aluminum bronze alloy under the conditions of deformation temperature of 650-950 ℃, strain rate of 0.01-5s-1 and true strain of 0-0.8 . The results show that the strain rate of 0.01 and 5s-1, the first hardening of aluminum bronze alloy, the flow stress peaked and then stabilized, showing the dynamic recovery characteristics; strain rate of 0.1 and 1s-1, the alloy occurs Local dynamic recrystallization. The hyperbolic sine form of the Zener-Hollomon parameter can be used to describe the flow stress behavior of the new aluminum bronze alloy during hot compression deformation.