Surface Tension of Two Alloys: A356 and Alufont-47
The surface tension thermophysical property data is included with the TCS Al-based Alloy Database (TCAL) as of version 7 (TCAL7).
A356 Alloy
The following compares the calculated surface tension of an A356 alloy as a function of Mg content with experimental data that are measured under hydrogen and vacuum environment and with and without Sr.
Figure 1: The surface tension of A356 + Mg alloys with and without Sr at 630 °C. The experimental data are taken from [1999Ans].
Alufont-47 Alloy
AlCu4TiMg, also known as Alufont-47, is a lightweight alloy which is commonly used in the automotive and aerospace industries. Plevachuk et al. [2020Ple] have measured some important thermophysical properties of this alloy including the surface tension, density, and thermal conductivity. The surface tension was measured with an oscillating drop technique using an electromagnetic levitation apparatus. The composition of the alloy used in their measurements in at% is:
| Sample | Cu | Mg | Si | Ti | Fe | Mn | Zn | Al |
|---|---|---|---|---|---|---|---|---|
| Alufont-47 | 1.9 | 0.4 | 0.1 | 0.2 | <0.1 | <0.1 | <0.1 | remainder |
Figure 2: Calculated surface tension of AlCu4TiMg alloy along with experimental data from [2020Ple].
Gancarz et al. [2021Gan] measured the surface tension of Al-5Mg-0.2Sc with addition of 3 and 6 wt% Li by means of discharge crucible method.
Figure 3: Calculated surface tension of two Al-Mg-Sc-Li alloys compared with experimental data from [2021Gan].
References
[1999Ans] J. P. Anson, R. A. L. Drew, J. E. Gruzleski, The surface tension of molten aluminum and Al-Si-Mg alloy under vacuum and hydrogen atmospheres. Metall. Mater. Trans. B. 30, 1027–1032 (1999).
[2020Ple] Y. Plevachuk, V. Sklyarchuk, G. Pottlacher, T. Leitner, P. Švec Sr., P. Švec, L. Orovck, M. Dufanets, A. Yakymovych, The liquid AlCu4TiMg alloy: thermophysical and thermodynamic properties. High Temp. - High Press. 49, 61–73 (2020).
[2021Gan] T. Gancarz, A. Dobosz, A.-A. Bogno, G. Cempura, N. Schell, R. Chulist, H. Henein, Characterization of rapidly solidified Al-Mg-Sc alloys with Li addition. Mater. Charact. 178, 1044–5803 (2021).