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SIMULATIONS OF ANISOTROPIC GRAIN GROWTH SUBJECT TO THERMAL GRADIENTS USING Q-STATE MONTE CARLO

机译:用Q态蒙特卡罗模拟热梯度各向异性晶粒的生长

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The Q-state Monte Carlo, Potts model is used to investigate 2D, anisotropic, grain growth of single-phase materials subject to temperature gradients. Anisotropy is simulated via the use of non-uniform grain boundary surface energies, and thermal gradients are simulated through the use of variable grain boundary mobilities. Hexagonal grain elements are employed, and elliptical Wulff plots are used to assign surface energies to grain lattices. The mobility is set to vary in accordance with solutions to a generalized heat equation and is solved for two separate values of the mobility coefficient. Among other findings, the results reveal that like isotropic grain growth, under the influence of a thermal gradient, anisotropic grain growth also demonstrates locally normal growth kinetics.
机译:Q状态蒙特卡洛(Monte Carlo,Potts)模型用于研究受温度梯度影响的单相材料的二维各向异性晶粒生长。通过使用非均匀的晶界表面能来模拟各向异性,并通过使用可变的晶界迁移率来模拟热梯度。使用六边形晶粒元素,并使用椭圆形沃尔夫夫图将表面能分配给晶格。将迁移率设置为根据广义热方程的解而变化,并针对迁移率系数的两个单独的值求解。除其他发现外,结果还表明,与各向同性晶粒生长一样,在热梯度的影响下,各向异性晶粒生长也显示出局部正常的生长动力学。

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