Kirkendall void formation in the diffusion bond between molybdenum and titanium was studied by using the Monte Carlo method. When the ordering energy between vanadium and vacancy was a negative value, the addition of 5at%V to titanium suppressed the void formation for the diffusion bonds having a tendency to form the voids. On the other hand, a positive value of the ordering energy did not show any effects on suppressing the void formation. It was found that the negative value of ordering energy generated the vanadium and vacancy complexes, and consequently prevented void formation.

Monte Carlo Simulation on Void Formation and Its Suppression in Diffusion Bonds. H.Ikeda, H.Masumoto, H.Matsuda: Journal of the Japan Institute of Metals, 2001, 65[5], 437-42