Thermal deformation behavior and microstructure evolution of Fe-8.5Mn-1.5Al light-weight medium manganese steel

In this paper, Fe-8.5Mn-1.5Al light-weight medium Mn steel is used as the research object, and the hot compression test is conducted by Gleeble-3500 thermal simulation tester. The dynamic reversion and dynamic recrystallization (DRX) processes are analyzed according to the true stress-strain curve; the q -s work-hardening rate curve is plotted by P-J double differential method to analyze the influence law between work-hardening and dynamic reversion and recrystallization softening effect of the material; the DRX critical strain model is established to analyze the influence law of deformation parameters on DRX; Based on the dynamic material model theory, the hot working diagram and three-dimensional power dissipation diagram are constructed, and the best hot working area is determined by combining the microstructure of the material. Finally, based on the above research content, a systematic overview of the dynamic softening effects of DRX and dynamic recovery (DRV) will be provided.(c) 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).