论文部分内容阅读
在正常晶粒长大元胞自动机模型的基础上添加圆形、正方形以及针形第二相粒子,并且对含有不同形状第二相粒子的晶粒长大过程进行仿真模拟和定量分析。模拟结果表明:第二相粒子对基体组织有钉扎作用,粒子面积分数越大,粒子总体钉扎作用越强;当第二相粒子面积分数较小时,针形第二相粒子的钉扎作用强于圆形和正方形第二相粒子;随着第二相粒子面积分数的增加,晶粒长大受第二相形状的影响逐渐减小;第二相粒子面积分数足够大时,不同形状的第二相粒子对晶粒长大的钉扎作用没有明显差别。
On the basis of the normal grain growth cellular automata models, circular, square and needle-shaped second phase particles are added, and the grain growth process of the second phase particles with different shapes is simulated and quantitatively analyzed. The simulation results show that the second-phase particles have a pinning effect on the matrix. The larger the particle area fraction, the stronger the overall pinning effect. When the second-phase particle area fraction is small, the pinning effect of the second-phase particles Which is stronger than that of the second phase particles in the round and square shape. With the increase of the area fraction of the second phase particles, the grain growth decreases gradually with the shape of the second phase. When the area fraction of the second phase particles is large enough, There was no significant difference in the pinning effect of the second phase particles on grain growth.