Microstructure Simulation of Q550D Ultra Low Carbon Bainite Steel

Abstract

Abstract:

Abstract： The experimental data obtained by hot compression experiment were used to establish a Q550D low carbon bainite steel dynamic recrystallization model and a cellular automata model. The microstructure evolution on the hot deformation process was simulated by using DEFORM3D finite element software. The simulation results show that the strain rate at a temperature of 1 150 °C for the 0.05 s-1 sample in the process of hot deformation microstructure have dynamic recrystallization and the grain size is refined. At a temperature of 1 050 °C when the strain rate is increased, the dynamic recrystallization austenitic grain size decreases. The simulation results agrees with the experimental results.

Key words: Q550D steel, dynamic recrystallization, cellular automaton, microstructure

CLC Number:

TG 142.1

DONG Hongbo,YU Xinping,ZHANG Wei. Microstructure Simulation of Q550D Ultra Low Carbon Bainite Steel[J]. Journal of Shanghai Jiaotong University, 2015, 49(01): 67-73.

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