论文标题
玻璃和晶体的竞争：相田模型
Competition of glass and crystal: phase-field model
论文作者
论文摘要
提出了用于描述与玻璃晶体竞争的固化过程的相位模型。该模型结合了相位形式主义和仪表型玻璃跃迁理论中的一阶相变模型。我们提出了一个随机运动方程式的自洽系统，用于描述晶体状的短距离顺序和玻璃化的未保守阶阶参数。结果表明，该模型在Quench进行有限的冷却速度时定性地描述了玻璃晶体竞争。晶体相在缓慢冷却速度和低底油下的成核通过波动机制进行。该模型证明了随着其冷却速率的增加而倾向于非晶化的趋势。
The phase-field model for the description of the solidification processes with the glass-crystal competition is suggested. The model combines the first-order phase transition model in the phase-field formalism and gauge-field theory of glass transition. We present a self-consistent system of stochastic motion equations for unconserved order parameters describing the crystal-like short-range ordering and vitrification. It is shown, that the model qualitatively describes the glass-crystal competition during quenching with finite cooling speed. The nucleation of the crystalline phase at slow cooling speeds and low undercoolings proceeds by a fluctuation mechanism. The model demonstrates the tendency to amorphization with the increase of its cooling rate.
