Application of integral method for investigating the boriding kinetics of AISI 316 steel

Chaima Zouzou, M. Keddam
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引用次数: 5

Abstract

The present work is dealing with the modelling of boriding kinetics of AISI 316 steel in the temperature range 1123–1273 K. A diffusion model based on the integral method was used in order to investigate the kinetics of formation of FeB and Fe2 B layers and that of diffusion zone formed on AISI 316 steel by considering the presence of boride incubation times. By using a particular solution of the resulting differential algebraic system, the diffusion coefficients in FeB, Fe2 B and diffusion zone (DZ) were estimated as well as the corresponding values of activation energies. Finally, this present diffusion model has been experimentally validated for two additional boriding conditions (1243 K for 3 and 5 h of treatment). A good concordance was observed between the experimental and the simulated results in terms of layers’ thicknesses.
应用积分法研究AISI 316钢渗硼动力学
本文研究了AISI 316钢在1123 ~ 1273 K温度范围内的渗硼动力学模型。采用基于积分法的扩散模型,研究了考虑硼化物孕育时间的AISI 316钢表面FeB和fe2b层形成动力学和扩散区形成动力学。利用所得到的微分代数系统的特解,估计了FeB、fe2b和扩散区(DZ)的扩散系数以及相应的活化能值。最后,该扩散模型在另外两种渗硼条件下(1243 K渗硼3 h和5 h)进行了实验验证。实验结果与模拟结果在层厚方面有很好的一致性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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