Microstructure Evolution and Control of 30Cr2Ni4MoV Steel During Hot Forming
Prediction and control of the microstructure to improve product performance are very important for the industry practice. In this study, microstructure evolutions of 30Cr2Ni4MoV steel under different conditions were simulated by changing the process parameters using the Deform 3D software. Effects of the forming process parameters on the microstructure were revealed: (1) the higher the temperature and the lower the strain rate, the smaller the strain are needed for the dynamic recrystallization; (2) when strain is enough, the higher the strain rate, the easier the uniform and small grain size can be obtained; (3) under a certain strain rate, the grain size increases as the deformation temperature increases. The microstructure of metal can be predicted and controlled according to the effects of hot forming process parameters on the microstructure evolution.
X. X. Zhang et al., "Microstructure Evolution and Control of 30Cr2Ni4MoV Steel During Hot Forming", Advanced Materials Research, Vols. 317-319, pp. 170-173, 2011