铸造合金的微观组织模拟研究进展

Advances in Microstructure Simulation of Casting Alloy

凝固过程的数值模拟正在由宏观向微观转变。微观模拟不仅可以得到材料的凝固组织,而且还能为宏观模拟提供准确的潜热释放信息。针对目前微观组织模拟的研究现状,介绍了几种主要的模拟研究方法,如确定性模拟方法、随机性模拟方法和相场方法等,阐述了其主要特征和模拟微观组织时存在的优缺点。最后对微观模拟中现存的问题及发展方向作了分析。

The numerical modeling of solidification process is moving from macro-to micro-modeling.Micro-modeling can not only predict the solidified microstructure of materials but also provide accurate information on latent heat releasing for macro-modeling.In the paper the state-of-the-art of microstructure simulation is given in order to describe the main methods of micro-modeling,such as deterministic,stochastic and phase-field modeling,etc.Finally the existing problems and the future tendency are analyzed.