Density, Viscosity, and Electrical Conductivity of Hypoeutectic Al-Cu Liquid Alloys

New workable aluminum-based light alloys are a key issue in current materials science. In this work, thermophysical properties (density, viscosity, and electrical conductivity) of liquid Al-4 wt pct Cu, Al-20 wt pct Cu, Al-30 wt pct Cu, and AlCu4TiMg alloys have been measured in a wide temperature range. The anomalies with respect to the concentration dependence of the electrical conductivity are explained in terms of the s-d hybridization model. A comparison with data and scaling relations available in the literature is given.