Abstract

In this study an inverse heat transfer problem was considered. The dependence of the thermal conductivity , and the dependence of the heat capacity to the temperature were obtained by using the direct method for a poor alloyed steel material. The model temperatures obtained from the solutions of the finite difference method were taken into account instead of the experimental temperature field values . The influence of some factors (time and space step values, solution algorithm, division number of the temperature region where λ )T( v )T(C m τ),x(T d τ),x(T λ )T( and changes, the initial value of , etc.) which can effect the solution sensitivity was examined. It was found that the values of , v )T(C λb ΔTd λb and M had a strong effect to the solution sensitivity.