Thermodynamic activities and phase boundaries for the alloys of the solid solution of Co in Ni{sub 3}Al
- Technische Hochschule Darmstadt (Germany). Inst. of Physical Chemistry
- Research Center 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}Co{sub x}(x = 0, 0.03, 0.06, 0.09, 0.12, or 0.15) was investigated at temperatures between 1326 to 1581 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, Co, and Ni were determined over the samples investigated. 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 lobe 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 Co in the {gamma}{prime} phase.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 556450
- 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. 28; ISSN 1073-5623; ISSN MMTAEB
- Country of Publication:
- United States
- Language:
- English
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