Interdiffusion in Solid Solution of the Al–Ag–Zn System at 832 K

Abstract

Interdiffusion in an α-solid solution of Al–Ag–Zn alloys at 832 K has been investigated. The diffusion profiles have been determined, and then the diffusion paths have been drawn in the ternary composition triangle. The interdiffusion coefficients \ ildeD_AgAg^Al, \ ildeD_AgZn^Al, \ ildeD_ZnAg^Al and \ ildeD_ZnZn^Al have been determined by Matano’s method. The four coefficients have been found to be sensitive to the solute concentration. The diffusion profiles and paths have been also calculated by the solution of Fujita et al. and by the finite-difference method using the experimental values of the four interdiffusion coefficients. Good agreements have been found between the experimental and calculated both of them.