Study of the influence of TiB2 particles on the melt structure of the hypoeutectic Al-Cu alloy by small angle X-ray scattering

Small angle X-ray scattering (SAXS) studies were carried out in Shanghai Synchrotron Radiation Facility (SSRF) to study the effect of addition of TiB2 particles on the melt structures of Al-15 wt% Cu. It was found that doping with TiB2 particles could dramatically reduce the sizes of the melt aggregates at temperatures ranging from the melting point to 800 °C. The results show that the aggregates in the Al-Cu melt present mass fractal characteristics and distribution of incompact 3D flocs.