Development of New Multiscale Model to Evaluate Material Performance Using Phase-Field-Crystal Method

结果表明，相场-晶体模拟方法能够反映多晶金属变形过程中温度、应变速率和晶粒尺寸的变化规律。为了实现相场晶体模拟的高速计算，传统的相场模拟采用了GPGPU。其结果是，它已被证实，GPU相场模拟实现约70倍的CPU的性能加速。此外，通过使用多相场方法进行静态再结晶模拟，已经表明，晶界能和迁移率的取向差依赖性是形成再结晶织构的重要因素。

It has been concluded that the phase-field-crystal simulation can express the dependencies of temperature, strain rate and grain size on the deformation of polycrystalline metal. To achieve the high speed computing of phase-field-crystal simulation, GPGPU has been employed for the conventional phase-field simulation. As a result, it has been confirmed that GPU phase-field simulations achieve about 70 times performance speedup for CPU. Furthermore, by performing the static recrystallization simulations using multi-phase-field method, it has been shown that the misorientation dependencies of grain boundary energy and mobility are important to form the recrystallization texture.