论文标题
在XPFC二进制合金中结合密度跳跃和持有物种的动力学
Incorporating density jumps and species-conserving dynamics in XPFC binary alloys
论文作者
论文摘要
这项工作提出了替代二进制合金的结构相位晶体模型的一致表述，该模型允许不等性的描述阶段，这是固化的关键特征。我们进一步开发了模型的动力学，以与真正管理物种密度中保守的Langevine动力学一致。此外，这项工作扩展了控制压力的能力，到目前为止，仅在纯材料中实施，通过改善控制先前工作压力的控制系统，从纯材料中实施。我们研究了新模型的平衡特性，并证明对压力的控制可以驱动各种运动学显微镜过程，例如晶界预融化，相位不稳定性以及晶粒或相之间边界运动。
This work presents a consistent formulation of the structural phase-field-crystal model of substitutional binary alloys that allows for the description phases of unequal densities, a key feature in solidification. We further develop the dynamics of the model to be consistent with conserved Langevine dynamics in the true governing species densities. Additionally, this work expands on the ability to control pressure, so far only implemented in pure materials, to binary alloys by improving the control system that controls pressure from previous work. We study the equilibrium properties of the new model, and demonstrate that control of pressure can drive various kinematic microscopic processes in materials such as grain boundary pre-melting, phase instability, and grain or inter-phase boundary motion.
