Nb-Based Nb-Al-Fe Alloys: Solidification Behavior and High-Temperature Phase Equilibria

High-melting Nb-based alloys hold significant promise for the development of novel high-temperature materials for structural applications. In order to understand the effect of alloying elements Al and Fe, the Nb-rich part of the ternary Nb-Al-Fe system was investigated. A series of Nb-rich ternary a...

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Veröffentlicht in:	Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2018-03, Vol.49 (3), p.752-762
Hauptverfasser:	Stein, Frank, Philips, Noah
Format:	Artikel
Sprache:	eng
Schlagworte:	Alloy development Alloy systems Alloying effects Alloying elements Characterization and Evaluation of Materials Chemistry and Materials Science Electric arc melting Ferrous alloys Heat treatment Liquidus Materials for High-Temperature Applications: Next Generation Superalloys and Beyond Materials Science Metallic Materials Nanotechnology Niobium Phase equilibria Solidification Structural Materials Surfaces and Interfaces Ternary alloys Ternary systems Thermal analysis Thin Films Topical Collection: Next Generation Superalloys and Beyond
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Beschreibung
Zusammenfassung:	High-melting Nb-based alloys hold significant promise for the development of novel high-temperature materials for structural applications. In order to understand the effect of alloying elements Al and Fe, the Nb-rich part of the ternary Nb-Al-Fe system was investigated. A series of Nb-rich ternary alloys were synthesized from high-purity Nb, Al, and Fe metals by arc melting. Solidification paths were identified and the liquidus surface of the Nb corner of the ternary system was established by analysis of the as-melted microstructures and thermal analysis. Complementary analysis of heat-treated samples yielded isothermal sections at 1723 K and 1873 K (1450 °C and 1600 °C).
ISSN:	1073-5623 1543-1940
DOI:	10.1007/s11661-017-4334-0