最大熵产生原理在非平衡凝固中应用-中国材料进展

文章信息/Info

Title:: Applications of the Maximum Entropy Production Principle to Non-Equilibrium Solidification

摘要:: 近年来，最大熵产生原理在物理、化学、生物等领域得到广泛应用，被认为是描述非平衡体系演化的普适性原理; 其核心思想是孤立非平衡耗散体系演化总是选择最短路径，以使体系尽可能快地向平衡态演化。伴随非平衡凝固技术在工业生产中应用更加广泛，凝固理论研究却仍集中于近平衡过程; 最大熵产生率原理在非平衡凝固中的应用可推动非平衡凝固理论的发展，进而促进凝固理论的工业应用。本文总结了近年来最大熵产生原理在非平衡凝固中的应用: 二元合金非平衡凝固界面动力学模型和多相场模型、多元合金非平衡凝固界面动力学模型、平界面稳定性分析及自由枝晶生长模型。

Abstract:: Recently, maximum entropy production principle (MEPP) has been widely applied to physical, chemical and biological problems. MEPP, which is considered a universal law for the evolution of non-equilibrium dissipative systems, means that the isolated non-equilibrium system will tends to the state with maximum entropy along the shortest possible path. Rapid solidification, a typical non-equilibrium process, has been adopted in industrial processes while the theoretical studies of solidification still focus on the near-equilibrium solidification. Thus, the application of MEPP can motivate the development of non-equilibrium solidification theory, thus promote its application to industrial processes. This paper summaries recent application of MEPP to non-equilibrium solidification, including interface kinetics and multi-phase-field model for binary alloys, interface kinetics, morphological stability and dendrite growth for multi-component alloys.