Abstract
By using an acoustic method, the duration of reverberation of γ′-Ni·Al bronze sintered alloy was compared with those of Cu-10wt%Sn, Fe-10wt%Cu and α-Ni·Al bronze sintered alloys. The relationship between the duration of reverberation and internal friction was discussed. It was found that the duration of reverberation in this γ′-Ni·Al bronze sintered alloy is extremely shorter than those in other alloys, and decreases linearly with increasing internal friction.
