A New Approach to Modeling the Flow Curve of Hot Deformed Austenite

作者：Quelennec Xavier^*; Bozzolo Nathalie; Jonas John J; Loge Roland

来源：ISIJ International, 2011, 51(6): 945-950.

• flow curve modeling
• austenite
• dynamic recrystallization
• work hardening parameters
• Avrami kinetics

A new, more physically realistic and practically useful model is presented for the simulation of high temperature austenite flow curves. It is an extension of our earlier empirical model based on the Avrami kinetics of dynamic recrystallization. In the new approach, the normalization parameter is expressed in terms of the fractional recrystallization and not the amount of softening. Compression experiments carried out on a Nb-modified plain carbon steel enable the simulated flow curves and progress of recrystallization predicted by the two models to be compared.

• 出版日期2011