Transactions of Materials and Heat Treatment

Title：Value simulation and experiment study of dynamic re-crystal process of 35CrMo steel

Authors： ZHANG Bin LI Bo ZHANG Hong-bing(1.Shanghai NO.1 Iron & Steel CO. Ltd. Baoshan Steel Group 2.Dept. of Materials Eng. Institute of Shanghai Technology)

Unit：

KeyWords： Dynamic recrystallization Numerical simulation Structure evolution Grain size

ClassificationCode：TG301

year,vol(issue):pagenumber：2004,29(6):36-39

Abstract：

By integrating the thermo-mechanical coupled FEM with mathematical model of microstructure evolution, the paper proposes a numerical prediction method for microstructure evolution of DRX during hot deformation and subsequent SRX process on the MARC FEM software platform. As an application, the microstructure evolution of 35CrMo steel during hot deformation and subsequent SRX is simulated. The effect of strain, strain rate and deformation temperature on the evolution of microstructure is predicted. At a certain temperature, the change of DRX grain size is in verse with the strain rate, and with the proceeding of deformation the grain size is refined and heterogeneous; At the same time, at a certain strain rate, the change of DRX grain size is refined with the decreasing of deformed temperature, which can improve the property of forged piece. The simulation results agree well with the experimental results shows that the method is able to successfully predict the microstructure of metals during hot deformation and after hot deformation.

Funds：

Reference：

1　沈豫立等金属零件热处理应力与变形的计算武汉:华中理工大学出版社,1993

Service：

【This site has not yet opened Download Service】【Add Favorite】