Effect of Diffusion Processes During Pack Rolling on Multilayer Material Stability

Resumo

Results are provided for a study of diffusion redistribution of chromium and nickel in multilayer metallic materials prepared by hot pack rolling. The choice of steels for forming the original binary composite multilayer materials is based on the assumption of the mutual effect of the main alloying elements and carbon. Multilayer materials are studied based on steels 08kp + 08Kh18, 08kp + 08Kh18N10, U8 + 08Kh18, and U8 + 08Kh18N10, having 100 layers after the first and 1500 layers after the second production cycles. It is shown that the diffusion mobility of chromium between layers is the main reason for a slowdown in nickel diffusion. Results of mathematical modeling compare well with the experimental data obtained.