Modeling and simulation of quenching and tempering process in steels
Quenching and tempering is a combined heat treatment process to achieve maximum toughness and ductility at a specified hardness and strength. It is important to develop a mathematical model for quenching and tempering process for satisfy requirement of mechanical properties with low cost. This paper presents a modified model to predict micro-structural evolution and hardness distribution during quenching and tempering process of steels. The model takes into account tempering parameters, carbon content, isothermal and non-isothermal transformations. Moreover, precipitation of transition carbides, decomposition of retained austenite and precipitation of cementite can be simulated respectively. Hardness distributions of quenched and tempered workpiece are predicted by experimental regression equation. In order to validate the model, it is employed to predict the tempering of 80MnCr5 steel. The predicted precipitation dynamics of transition carbides and cementite is consistent with the previous experimental and simulated results from literature. Then the model is implemented within the framework of the developed simulation code COSMAP to simulate microstructure, stress and distortion in the heat treated component. It is applied to simulate the quenching and tempering process of J55 steel. The calculated results show a good agreement with the experimental ones. This agreement indicates that the model is effective for simulation of quenching and tempering process.
Quenching and tempering Phase transformation kinetics Tempered martensite Cementite Hardness
Xiaohu Deng Dongying Ju
School of Mechanical Engineering, Tianjin University of Technology and Education, Tianjin, 300222, C Department of Mechanical Engineering, Saitama Institute of Technology, Saitama, 369-0293, Japan
国际会议
北京
英文
852-856
2012-10-23（万方平台首次上网日期，不代表论文的发表时间）