Abstract
This paper reports the variation of elastic moduli with composition at room temperature in four binary systems, namely, Sn–Ag, Cu–Sb, Cu–Sn and Sn–Sb. The systems exhibit different phases at room temperature and the structure of some of the phases differ over certain ranges of composition. It is shown that the moduli curves exhibit brakes by way of maxima and minima whenever a phase change is accompanied by a structure change. It can be suggested the course of the moduli vs composition curves can be taken as a helpful guide in corroborating metallurgical information as to the composition at which structure changes occur.
