Simulation of Precipitation Kinetics with Non-Spherical Particles
Simulation of Precipitation Kinetics with Non-Spherical Particles
复制标题
非球形颗粒的沉淀动力学模拟
DOI：
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发表时间：
2018
影响因子：
1.4
通讯作者：
P. Mason
中科院分区：
文献类型：
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作者：
Kaisheng Wu;Qing Chen;P. Mason
提出了一种基于Langer和Schwartz理论的动力学模型来处理非球形析出物的析出动力学。三种类型的颗粒形态，长方体，针状和板状，进行了处理。该模型明确考虑了相干弹性应变能和界面能的各向异性，能够预测平衡粒子的形态。在准稳态和形状保持条件下，研究了形状对生长动力学的影响。对几个实际例子的验证显示出合理的一致，但由于模型限制和实验数据差异的不确定性，必须小心。
A kinetic model that is modified based on Langer and Schwartz theory has been developed to treat precipitation kinetics of non-spherical precipitates. Three types of particle morphology, cuboid, needle and plate, have been treated. Explicitly accounting for coherent elastic strain energy and interfacial energy anisotropy, the model enables the prediction of equilibrium particle morphology. The shape effect on growth kinetics has also been investigated assuming quasi steady-state and shape preserving conditions. Validations against a couple of practical examples have shown reasonable agreements, though care must be taken due to uncertainties from model limitations and discrepancies in experimental data.