Thermodynamic activities and phase boundaries for the alloys of the Ni{sub 3}Al-Ni{sub 3}Ti pseudobinary section in the Ni-Al-Ti system

Journal Article · Sun Sep 01 00:00:00 EDT 1996 · Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science

DOI:https://doi.org/10.1007/BF02652360· OSTI ID:382518

Kapala, J ^[1]; Kath, D; Hilpert, K ^[2]

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1. Technical Univ. of Wroclaw (Poland)
2. Research Center, Juelich (Germany). Inst. of Materials in Energy Systems

The pseudobinary section Ni{sub 3}Al-Ni{sub 3}Ti of the ternary Ni-Al-Ti system has been investigated by thermal analysis and Knudsen effusion mass spectrometry. The solidus of the pseudobinary section and the thermodynamic activities of Ni and Al have been determined in the alloys Ni{sub 0.75}Al{sub 0.25{minus}x}Ti{sub x} of the compositions x = 0.00 to 0.21. Moreover, the thermodynamic activities of Ni and Ti in Ni{sub 3}Ti (x = 0.25) as well as the Gibbs energy of mixing of the Ni{sub 0.75}Ti{sub 0.25}phase resulted. The ionization cross-sectional ratio {sigma}(Ni)/{sigma}(Ti) = 0.77 has been evaluated for the electron impact energy of 50 eV.

• Sponsoring Organization: USDOE
• OSTI ID: 382518
• Journal Information: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Journal Name: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science Journal Issue: 9 Vol. 27; ISSN 1073-5623; ISSN MMTAEB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CHEMICAL COMPOSITION
INTERMETALLIC COMPOUNDS
KNUDSEN FLOW
LIQUID METALS
MASS SPECTROSCOPY
MIXING HEAT
NICKEL ALLOYS
PARTIAL PRESSURE
PHASE STUDIES
THERMAL ANALYSIS
THERMODYNAMIC ACTIVITY
TITANIUM ALLOYS