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

Abstract

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.

Density of copper-aluminum alloys at temperatures up to 1400°c determined by the gamma-ray technique

“…This value is comparable with the accuracy of the known reference data [2,3]. Moreover, the authors of [4] studied only the range of compositions adjacent to aluminum (up to 15 at %). In the last study of the density of melts of this system in the whole range of compositions with a con centration step of 10%, we are acquainted with [6], one of the new methods of high temperature densitometry, i.e., the levitating drop method, was applied.…”

“…For example, the authors of [4] used the lying drop method [5] with an accuracy of ±3%. This value is comparable with the accuracy of the known reference data [2,3].…”

Viscosity of Al–Cu liquid alloys: measurement and thermodynamic description

“…More recent measurements have been carried out by Friedrichs et al [12], Plevachuk et al [13], and Konstantinova and Popel [14]. Plevachuk et al [13] determined viscosities of hypoeutectic Al-Cu alloys using an oscillating cup viscometer and Konstantinova and Popel [14] investigated the system up to x Cu = 0.5.…”

“…Plevachuk et al [13] determined viscosities of hypoeutectic Al-Cu alloys using an oscillating cup viscometer and Konstantinova and Popel [14] investigated the system up to x Cu = 0.5. The maximum temperature of both results was about 1250 K. In the work of Friedrichs et al [12], a gas bubble viscometer has been employed for the measurement of viscosity, density, and surface tension.…”

Semi-empirical equation for the estimation of viscosity of liquid metal alloys of eutectic composition

“…The model presented has been verified also for other systems at eutectic compositions but the results are not reported in this work because the discrepancy between the experiments performed with different methods by different researchers is too high (up to 70%), even though interesting studies have been conducted in these years (e.g. [11][12][13][14][15][16][17][18][19][20]). …”