Influence of alloying element change on properties of 20MnCr5 steel gear after carburizing and quenching

doi:10.13251/j.issn.0254-6051.2022.10.013

Abstract

Abstract: In order to investigate the influence of alloying element change on properties of gears during carburizing and quenching, mild steel 20MnCr5 gears were used as the research object, and the performance parameters of two kinds of 20MnCr5 steel with different alloying elements were calculated by using JMatPro software. The carburizing and quenching processes of gears were simulated and analyzed based on the finite element method, and a mathematical model for the carburizing and quenching process was established according to the actual heat treatment process route. By using COSMAP software to numerical simulate the heat treatment process, and the effect of alloying element on temperature, microstructure, and hardness of the carburized 20MnCr5 steel gears was compared The results show that the simulated values are verified to be in good agreement with the experimental values. The temperature field and carburized layer have no obvious response to the change of material element content, while the microstructure distribution and hardness distribution after carburizing and quenching are more influenced by the change of alloying elements such as C, Mn, Cr and Al.

Key words: 20MnCr5 steel, alloying element, gear, carburizing and quenching, COSMAP simulation

CLC Number:

TG142.1

Zhang Yuquan, Chen Yong, Zang Libin, Ju Dongying, Zhou Leyu, Wang Zaizhou, Jia Jipeng. Influence of alloying element change on properties of 20MnCr5 steel gear after carburizing and quenching[J]. Heat Treatment of Metals, 2022, 47(10): 78-87.

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