快速凝固过程的热力学分析  

Thermodynamic Analysis of Rapid Solidification Process

作　　者：孙方遒 

机构地区：[1]渤海船舶职业学院,辽宁兴城125105

出　　处：《船舶职业教育》2015年第1期48-51,共4页Shipbuilding Vocational Education

摘　　要：通过快速凝固过程中的热力学分析,阐述了凝固热力学模式、亚稳平衡、界面平衡、T0线与快速凝固的关系,讨论了快速凝固过程中实现扩散、无溶质分凝的凝固的热力学条件,提出了实现快速凝固的温度条件。结合热力学计算技术,建立快速凝固数值模拟方法在工程中的应用,特别针对工业生产实践中所使用的具有复杂成分的多元多相合金,快速凝固原理及其组织形成的研究有重要的实际意义。Through the thermodynamic analysis of rapid solidification process, the author expounds the solidification thermodynamic mode, metastable equilibrium, interface equilibrium, the relationship between T_o line and rapid solidification, discusses the realization of diffusion during rapid solidification process, the thermodynamic condition of no solute segregation, proposes the temperature condition of rapid solidification, and establishes rapid solidification numerical simulation methods application in project, especially for multivariate multinomial alloy with complex components in industrial production practice, combined with the thermodynamic calculation technology. The research on rapid solidification principle and its organization form has a practical significance.

关 键 词：快速凝固 热力学 亚稳平衡 界面非平衡 

分 类 号：TG111.4[金属学及工艺—物理冶金]