Thermophysical properties of some Ni-based superalloysin the liquid state relevant for solidification processing
S. Amore, F. Valenza, D. Giuranno ; et al. ASI sponsor
Sep - 2015
DOI: 10.1007/s10853-015-9452-8
ISSN : 1573-4803 ;
journal : Journal of Materials Science
type: Article Journal

The thermophysical properties, e.g., melting range, specific heat, solid fraction, density, and surface tension of four industrial Ni-based alloys, namely MC-2, CMSX-10, TMS-75, and LEK-94, have been determined within the ground-based experiments program of the ESA MAP ThermoProp project. The tests were performed under reducing atmosphere in order to lower the oxygen contamination. The results obtained have been compared with the corresponding data of Ni-based alloys available in literature. The new experimental data have been analyzed as a function of both temperature and alloy composition and interpreted by means of different thermodynamic models.

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Notes : Acknowledgements: This work was supported by the EuropeanSpace Agency (ESA) Microgravity Applications Support Programme(MAP) under Contract No. 4200014306 (AO -99-022 and AO-2009-1020) and by the Italian Space Agency (ASI) under contract n. DCMIC-2011-036. The authors wish to thank the ThermoProp Team forthe fruitful discussions.