(1) Département des Technologies pour les Énergies Nouvelles, Commissariat à lÉnergie Atomique, 17 rue des Martyrs, 38054 Grenoble Cedex 09, France;(2) Institut für Raumsimulation, DLR, Linder Höhe, D-51170 Köln, Germany
Abstract:
The surface tension of the CMSX-4®reg; superalloy has been determined by the drop-weight and oscillating-drop methods which are well adapted to reactive materials. The recommended values are 1.59 J·m–2 for the surface tension at the liquidus temperature and –0.14× 10–3 J·m–2· K–1 for the temperature coefficient. A conclusion of the present work is that the interpretation of surface tension measurements performed on a complex alloy generally requires additional work to be performed on simpler associated binary or ternary systems, as well as some support from solidification experiments.