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采用能量消耗加工图研究 2E12 铝合金热压缩过程中的变形行为及其微观组织演变,且建立能量消耗效率与微观组织演变的关系。压缩变形温度范围为 250~500 °C,应变速率范围为 0.01~10 s-1,总真应变量为 0.5。结果表明,加工图中存在 2 个动态回复区域:(1) 325~400 °C,0.01~0.03 s-1,(2) 350~450 °C,1.78~10 s-1。当温度高于 450 °C时,2E12 合金发生部分动态再结晶现象,且动态再结晶体积分数随变形温度的升高而增大,但是当温度为 500 °C,应变速率为 1~10 s-1时,2E12 合金发生了第二相粒子回溶和沿晶开裂的现象。
The energy consumption process diagram was used to study the deformation behavior and microstructure evolution of 2E12 aluminum alloy during hot compression, and the relationship between energy consumption efficiency and microstructure evolution was established. Compressive deformation temperature range of 250 ~ 500 ° C, the strain rate range of 0.01 ~ 10 s-1, the total true strain is 0.5. The results show that there are two dynamic recovery zones in the processing map: (1) 325 ~ 400 ° C, 0.01 ~ 0.03 s-1, (2) 350 ~ 450 ° C, 1.78 ~ 10 s-1. When the temperature is higher than 450 ° C, the 2E12 alloy partially recrystallizes, and the dynamic recrystallization volume fraction increases with the deformation temperature, but when the temperature is 500 ° C, the strain rate is 1 ~ 10 s- 1, 2E12 alloy occurred second phase particles and crystal along the crystal cracking phenomenon.