Surface Tension of Titanium Alloys

The TCS Ti/TiAl-based Alloys Database (TCTI) includes the surface tension thermophysical property data starting with version 3 (TCTI3).

The surface tension of the alloys Ti48Al48Nb2Cr2, Ti46Al46Nb8, and Ti46Al46Ta8 are measured with the oscillating drop technique in an electromagnetic levitation device under reduced gravity conditions on board a parabolic flight airplane. The measured values are compared with the experimental data from [2018Wun]. The deviations in these plots can be partially attributed to the challenges in measurements of these dynamic transport properties.

Al-Ti-Nb-Cr

Surface tension of Al48Ti48Nb2Cr2 compared to experimental data

Figure 1: Surface tension of Al48Ti48Nb2Cr2. Experimental data are from [2018Wun].

Al-Ti-Nb

Surface tension of Al46Ti46Nb8 compared to experimental data

Figure 2: Surface tension of Al46Ti46Nb8. Experimental data are from [2018Wun].

Al-Ti-Ta

Surface tension of Al46Ti46Ta compared toe experimental data

Figure 3: Surface tension of Al46Ti46Ta8. Experimental data are from [2018Wun].

Ti64

The TCS Ti/TiAl-based Alloys Database (TCTI) predicts well-reproduced surface tension of Ti-6Al-4V, which is compared with different sets of experimental data.

Surface tension of Ti-64 compared to experimental data

Figure 4: Surface tension of Ti-64. Experimental data are from [2010Egr; 2016Rau; 2020Moh].

References

[2010Egr] I. Egry, D. Holland-Moritz, R. Novakovic, E. Ricci, R. Wunderlich, N. Sobczak, Thermophysical Properties of Liquid AlTi-Based Alloys. Int. J. Thermophys. 31, 949–965 (2010).

[2016Rau] J. R. Raush, Ph.D. thesis, Thermophysical and Thermochemical Property Measurement and Prediction of Liquid Metal Titanium Alloys with Applications in Additive Manufacturing, Louisiana State University, Lafayette, LA, USA (2016).

[2020Moh] M. Mohr, R. Wunderlich, R. Novakovic, E. Ricci, H.-J. Fecht, Precise Measurements of Thermophysical Properties of Liquid Ti–6Al–4V (Ti64) Alloy On Board the International Space Station. Adv. Eng. Mater. 22, 2000169 (2020).

[2018Wun]  R. K. Wunderlich, U. Hecht, F. Hediger, H.-J. Fecht, Surface Tension, Viscosity, and Selected Thermophysical Properties of Ti48Al48Nb2Cr2, Ti46Al46Nb8, and Ti46Al46Ta8 from Microgravity Experiments. Adv. Eng. Mater. 20, 1800346 (2018).