An Alternative to Avrami Equation

This paper proposes an alternative to the Avrami equation capable of describing whole transformation curves with significant fitting-correlations. The model bears physically meaningful parameters which permit considering the initial transformation kinetics independently from the subsequent microstructural evolution. Data of martensite, bainite, recrystallization, and pearlite transformations validate the model. Further to the expeditious description of transformation curves, the model guides the modeling of specific mechanisms.

本文提出了一种可替代阿夫拉米方程（Avrami equation）的模型，该模型能够完整描述相变曲线且具备显著的拟合相关性。该模型包含具有明确物理意义的参数，可实现初始相变动力学与后续微观组织演变的独立分析。马氏体、贝氏体、再结晶及珠光体相变的实验数据验证了该模型的有效性。除能够快速高效地描述相变曲线外，该模型还可用于指导特定相变机制的建模研究。