| ZHONG Han-lie,WANG Zhou,GAN Jin,WANG Xiao-li,YANG Ying,YAN Zhan-luan,WEI Ting-ting.42CrMo Austenitization Kinetic Parameters in Induction Hardening Process Based on ABAQUS-Matlab[J],49(9):266-273 |
| 42CrMo Austenitization Kinetic Parameters in Induction Hardening Process Based on ABAQUS-Matlab |
| Received:December 11, 2019 Revised:September 20, 2020 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2020.09.030 |
| KeyWord:42CrMo steel JMAK model austenitization surface induction hardening transformation simulation |
| Author | Institution |
| ZHONG Han-lie |
1.a.School of Automotive Engineering, b.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan , China; 2.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan , China |
| WANG Zhou |
1.a.School of Automotive Engineering, b.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan , China; 2.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan , China |
| GAN Jin |
3.School of Transportation, Wuhan University of Technology, Wuhan , China |
| WANG Xiao-li |
1.a.School of Automotive Engineering, b.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan , China; 2.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan , China |
| YANG Ying |
1.a.School of Automotive Engineering, b.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan , China; 2.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan , China |
| YAN Zhan-luan |
1.a.School of Automotive Engineering, b.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan , China; 2.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan , China |
| WEI Ting-ting |
1.a.School of Automotive Engineering, b.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan , China; 2.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan , China |
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| Abstract: |
| The work aims to determine the austenitization kinetics parameters of 42CrMo steel and verify the reliability of the parameters. The austenitization kinetics parameters of 42CrMo steel were determined according to the austenitic expansion curves of 42CrMo steel with different heating rates via the classical JMAK (Johnson-Mehl-Avrami-Kolmogorov) model and Kissinger method. The ABAQUS local moving induction hardening model was established, and the temperature change curve of the heating point in the hardening area was selected as the object to verify the austenitization model. Based on Scheil law and JMAK transformation kinetics model, the austenitization parameters obtained were used to discretize the continuous transformation process of 42CrMo into isothermal transformation at each time interval in Matlab and provide solution and carry out verification according to the extended analytical kinetics model and JAMK model adopted by relevant scholars. The austenitization kinetics parameters of 42CrMo obtained according to above methods were: activation energy of 2.04×106 J/mol, pro-exponential factor lnk0 of 230.78, and Avrami exponent n of 0.427, respectively. The hardening heating process could be divided into a large number of uniform time intervals, and the solved kinetics model was used to solve the austenite volume fraction at the corresponding temperature in each interval, which was superimposed in sequence. Based on the simulated austenite transformation time and transformation temperature, the model had good performance. JAMK model fits well for the continuous austenite transformation process of 42CrMo with non-isothermal and non-constant heating rate. It is feasible to use the parameter set solved in this work to simulate and predict the austenite transformation process of surface induction hardening. |
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