Thermodynamic activities and partial enthalpies of mixing in the solid solution of Fe in Ni{sub 3}Al

Journal Article · Fri Nov 01 04:00:00 EST 1996 · Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science

DOI:https://doi.org/10.1007/BF02595448· OSTI ID:413287

Albers, M ^[1]; Kath, D ^[2]; Hilpert, K ^[2]

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1. Technische Hochschule Darmstadt (Germany). Inst. of Physical Chemistry
2. Research Centre Juelich (Germany). Inst. of Materials in Energy Systems

The vaporization of the alloy samples of the compositions (Ni{sub 3}Al){sub 1{minus}x}Fe{sub x} (x = 0, 0.01, 0.02, 0.03, 0.04, 0.06, 0.08) was investigated at temperatures between 1,304 to 1,698 K by the use of Knudsen effusion mass spectrometry in order to obtain thermodynamic data for the solid solution {gamma}{prime} phase of the type Ni{sub 3}Al. The partial pressures of Al, Fe, and Ni were determined over the samples investigated. Excess partial enthalpies, excess partial entropies, and excess chemical potentials at a temperature of 1,473 K resulted for the components in the {gamma}{prime} solubility range. New results on the phase boundaries of the {gamma}{prime} solubility range were obtained by the analysis of quenched alloy samples and from the mass spectrometric studies. The results obtained are discussed with respect to the solubility behavior of Fe in the {gamma}{prime} phase.

• Sponsoring Organization: Deutsche Forschungsgemeinschaft, Bonn (Germany)
• OSTI ID: 413287
• 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: 11 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
IRON ALLOYS
KNUDSEN FLOW
MASS SPECTROSCOPY
NICKEL ALLOYS
PARTIAL PRESSURE
PHASE DIAGRAMS
PHASE STUDIES
QUENCHING
SAMPLE PREPARATION
SOLUBILITY
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES