Transactions of Materials and Heat Treatment

Title：Dynamic recrystallization model and numerical simulation for F45V nonquenched and tempered steel

Authors： MA Wen-long WANG Jin WANG Bao-ping XU De-peng CHEN Xue-wen

Unit： Qingdao Technological University Henan University of Science and Technology

KeyWords： non-quenched and tempered steel F45V dynamic recrystallization numerical simulation microstructure

ClassificationCode：TG142.1

year,vol(issue):pagenumber：2013,38(2):138-142

Abstract：

A thermal simulation experiment on F45V non-quenched and tempered steel was finished on Gleeble-1500 thermal simulation machine and dynamic recrystallization fraction model, grain size model and the different flow stress-strain curves were obtained under 9501200℃, the strain rate of 0.01 to 10s-1 and the strain of 0.8. The hot deformation process and the behavior of dynamic recrystallization for F45V non-quenched and tempered steel were investigated on the software platform of Deform-3D. The simulated results show that the DRX occurs sufficiently at the large deformation zones of the forging with sufficient deformations, and the recrystallized fraction is higher than the other deformation zone; raising deformation temperature and reducing strain rate are contributed to the DRX of F45V. The simulation results are in good agreement with the experimental results.

Funds：

山东省自然基金资助项目（ZR2010EQ027）

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