Monte Carlo simulation on void formation and its suppression in diffusion bonds

We have studied the Kirkendall void formation in the diffusion bond between molybdenum and titanium by using the Monte Carlo method. When the ordering energy between vanadium and vacancy was a negative value, the addition of five atomic percent of vanadium to titanium suppressed the void formation f or the diffusion bands having a tendency to form the voids. On the other ha nd, a positive value of the ordering energy did not show any effects on sup pressing the void formation. We found that the negative value of ordering e nergy generated the vanadium and vacancy complexes, and consequently preven ted the void formation.