Hot deformation behavior and flow stress model of F40MnV steel

来源期刊：中南大学学报(英文版)2007年第1期

论文作者：王进 陈军 赵震 阮雪榆

文章页码：19 - 19

Key words：microalloyed forging steel; flow stress; dynamic recovery; dynamic recrystallization; Zener-Hollomon parameter

Abstract: Single hit compression tests were performed at 1 223-1 473 K and strain rate of 0.1-10 s^-1 to study hot deformation behavior and flow stress model of F40MnV steel. The dependence of the peak stress, initial stress, saturation stress, steady state stress and peak stain on Zener-Hollomon parameter were obtained. The mathematical models of dynamic recrystallization fraction and grain size were also obtained. Based on the tested data, the flow stress model of F40MnV steel was established in dynamic recovery region and dynamic recrystallization region, respectively. The results show that the activation energy for dynamic recrystallization is 278.6 kJ/mol by regression analysis. The flow stress model of F40MnV steel is proved to approximate the tested data and suitable for numerical simulation of hot forging.

基金信息：the National Natural Science Foundation of China