Precipitation ofPhase Using General Diffusion Equation with Comparison to Vitek Diffusion Model in Dissimilar Stainless Steels

[摘要] This study performs a precipitation examination of thephase using the general diffusion equation with comparison to the Vitek model in dissimilar stainless steels during multipass welding. Experimental results demonstrate that the diffusivities (, , and ) of Cr, Ni, and Si are higher in -ferrite than (, , and ) in thephase, and that they facilitate the precipitation of the σ phase in the third pass fusion zone. The Vitek diffusion equation can be modified as follows .

[学科分类] 工业化学