Computational simulation of diffusion process in multicomponent and multiphase systems in diffusion bonding

摘要

Diffusion bonding is a solid state welding process useful for joining similar and dissimilar metals.nIn the present paper, the interdiffusion occurring during the diffusion bonding of Al to Zn, Al to Mg,nand one Ni base alloy to another was investigated. The composition profiles across the interface,nthe thickness of the diffusion layer and the growth of phases at the interface were computed usingnthe diffusion software Pandiffusion and the thermodynamic and kinetic databases of Pandat. Thencalculated results agreed well with existing experimental data. Thus, it was demonstrated thatnthese software and databases can be useful for studying diffusion bonding and reducing thennumber of trial-and-error experiments.