Microstructure Evolution of Dynamic Recrystallization of 42CrMo Steel during Multi-Stage Forging by FEM

Abstract

Different process steps of the workpiece have different effects on the microstructure in the multi-stage forging. In this study, the effect of four different process steps of steering arm on microstructure was studied by FEM. Results have showed that upsetting is beneficial to refine the microstructure as well as finish forging. Especially drawing can make the distribution of microstructure homogeneous while bending has less effect on it. The already-designed forging process for steering arm was reasonable based on the simulation. Eventually, the grain size level of the steering arm was tested as 6.5 based on the conventional standard.

The Influence of Hot Deformation on the Mechanical and Structural Properties of 42CrMo4 Steel

“…Research was also carried out regarding the influence of temperature and strain rate on the deformation behaviour and microstructure of the extruded 42CrMo4 alloy [23][24][25]. During hot compression, the dynamic recrystallization kinetics of 42CrMo steel were studied [26][27][28][29][30]. Constitutive models and equations were developed to explain the hot behaviour of 42CrMo4 steel [31][32][33][34][35][36][37][38][39].…”

Aspects Regarding the Influence of Hot Deformation on the Mechanical and Structural Properties of 42CrMo4 steel

“…Research was also carried out regarding the influence of temperature, strain rate on the deformation behavior and microstructure of the as extruded 42CrMo4 alloy [23,25]. During hot compression was studied the dynamic recrystallization kinetics of 42CrMo steel [26][27][28][29][30]. Constitutive models and equations were developed to explain the hot behavior of 42CrMo4 steel [31][32][33][34][35][36][37][38][39].…”