在Gleeble-1500热模拟机上对3104铝合金进行双道次等温热压缩实验,变形温度为400和500 ℃,变形速率为0.01和0.1 s-1,道次的变形量均为0.4,道次间保温时间为30、60和120 s.结果表明:3104铝合金在400 ℃以上的双道次热变形过程中,发生动态与静态软化.道次间的软化率随着变形温度和应变速率的增加,以及道次间停留时间的延长和道次间保持温度的升高而增大.运用双道次软化率建立了3104铝合金热变形再结晶模型,其再结晶激活能为155 kJ/mol.
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