通过建立相场模型,结合网格畸变模型,对6061变形铝合金的再结晶过程进行计算机模拟,研究其在不同退火温度下的晶粒长大过程和尺寸分布。结果表明,再结晶形核先在晶界处形成,并以合并和吞噬周围晶粒的方式不断长大向晶粒内部发展。大尺寸晶粒随退火温度的升高而增加,出现晶粒粗化现象。 By establishing phase field model and combining with grid distortion model, the recrystallization process of 6061 deformed aluminum alloy was simulated by computer and the grain growth process and size distribution under different annealing temperature were studied. The results show that recrystallized nuclei first form at the grain boundaries and continue to grow inside the grains in a manner that combines and engulfs the surrounding grains. With the increase of annealing temperature, the grain size increases and the grain coarsening appears.