Short range order in molten Al–Si alloys

Abstract

We have studied the microscopic structure such as, concentration fluctuation in long wavelength limit (SCC(0)), Warren–Cowely short range order parameter (α 1), ratio of mutual and intrinsic diffusion coefficients (D M/D id) of molten Al–Si alloy at 1700 K using a statistical model of complex formation on the basis of quasi-lattice theory for weakly interacting systems. The approach used in this article reveals that molten Al–Si alloy at 1700 K is a weakly interacting heterocoordinating system and the alloy is more ordered in the Al-rich end.