Carburization simulation analysis on different materials and diffusion coefficient models

doi:10.13251/j.issn.0254-6051.2023.11.039

Abstract

Abstract: Taking alloy steels 17Cr2Ni2Mo and 20CrNi2Mo as examples, a new diffusion coefficient calculation model D(T,C,Q) was proposed by adding an alloy factor Q on the basis of previous diffusion coefficient calculation model D(T,C). By comparison with another diffusion coefficient calculation model D(T,C,M), the carburizing process of the two alloy steels was simulated and analyzed by using DEFORM software, and the simulation results were verified by stripping test. The results show that the simulation accuracy of D(T,C,Q) and D(T,C,M) models affected by alloy elements is higher than that of D(T,C) model. The simulation accuracy of D(T,C,Q) model of the 17Cr2Ni2Mo steel is higher than that of D(T,C,M), and that of D(T,C,M) model of the 20CrNi2Mo steel is slightly higher than that of D(T,C,Q) model, indicating that the D(T,C,Q) model has higher accuracy in calculating the diffusion coefficient.

Key words: alloy steel, carburizing, alloy elements, diffusion coefficient, simulation accuracy

CLC Number:

TG156.8

Wang Xin, Li Zhenjie, Zhang Yanhui, Li Hui. Carburization simulation analysis on different materials and diffusion coefficient models[J]. Heat Treatment of Metals, 2023, 48(11): 241-244.

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