Diffusion Phenomenon of Carbon in Steel during Weld Thermal Cycles

Abstract

In this study, it was carried out to investigate in detail the one dimensional diffusion phenomenon of carbon in steel, in austenitic temperature range, in the case of both time and temperature varying at the same time such as weld thermal cycles.
According to the experimental results and phenomenological considerations, it was made clear that the one dimensional diffusion phenomenon of carbon in steel in austenitic temperature range during weld thermal cycles could be explained phenomenologically by Fick's second law in which diffusion coefficient, D was made to be a function of time.