利用Gleeble-1500D热模拟机, 对AZ31镁合金在300～450℃以及应变速率为0.1 和1.0s-1条件下进行了热压缩.发现在热压缩变形过程中发生了动态再结晶, 其动态再结晶平均晶粒尺寸(d)的自然对数与Zener-Hollomon参数(Z)的自然对数成线性关系.再利用d与Z的关系, 通过较低的热挤压温度(300～350℃), 获得了动态再结晶晶粒直径在10～20μm之内的镁合金管材.
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