The structure of Al–Cu and Al–Si eutectic melts

The structure of Al83Cu17 and Al88Si12 liquid eutectic alloys has been studied using the X-ray diffraction (XRD) and reverse Monte-Carlo (RMC) methods. The total and partial structure factors and pair correlation functions as well as structure parameters obtained therefrom have been analyzed. Chemically ordered Al–Cu groups significantly effect the structure in Al83Cu17, while a tendency to chemical ordering between atoms of an unlike kind is negligible in Al88Si12.