Numéro
J. Phys. IV France
Volume 120, December 2004
Page(s) 259 - 268
DOI http://dx.doi.org/10.1051/jp4:2004120030


J. Phys. IV France 120 (2004) 259-268

DOI: 10.1051/jp4:2004120030

The computer simulation of the boost diffusion oxidation process for the deep-case hardening of titanium alloys

J. Luo, Z. Zhang, H. Dong and T. Bell

Department of Metallurgy and Materials, The University of Birmingham, Birmingham, B15 2TT, UK

j.luo.1@bham.ac.uk

Abstract
A one dimensional finite difference diffusion model for simulating the Boost Diffusion Oxidation (BDO) process of titanium alloys is developed and implemented as a window-based program. The program can simulate the BDO process for both constant diffusion coefficient and concentration dependent diffusion coefficient. It is found that to accurately simulate the BDO process, the concentration dependence of oxygen diffusion has to be taken into account. If the concentration dependence is taken as the Shamblen and Redden's equation, the simulation results agree well with the experimental results.



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