Formation of Structurally Complex U-Phase in Al72Pd12.8Co15.2 Alloy

Ivona Černičková; Peter Svec; Emília Illeková; Dusan Janickovic; Pavol Priputen; Jozef Janovec

doi:10.4028/www.scientific.net/KEM.592-593.517

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 592-593Formation of Structurally Complex U-Phase in...

Formation of Structurally Complex U-Phase in Al₇₂Pd_12.8Co_15.2 Alloy

Abstract:

The U-phase in the Al₇₂Pd_12.8Co_15.2 alloy was studied under non-equilibrium (casting, differential thermal analysis) and near-equilibrium (long-term annealing) conditions to consider its compositional homogeneity. In the investigation, scanning electron microscopy including energy dispersive X-ray spectroscopy, X-ray diffraction, transmission electron microscopy, and differential thermal analysis were used. Contrary to the finding reported for the Al_69.8Pd_13.8Co_16.4 alloy, the results obtained for the investigated Al₇₂Pd_12.8Co_15.2 alloy did not confirm the compositional heterogeneity of the near-equilibrium U-phase after annealing at 700°C for 2000 h and at 850°C for 500 h.

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Periodical:

Key Engineering Materials (Volumes 592-593)

Pages:

517-520

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.592-593.517

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Cite this paper

Online since:

November 2013

Authors:

Ivona Černičková, Peter Svec, Emília Illeková, Dusan Janickovic, Pavol Priputen, Jozef Janovec

Keywords:

Al-Pd-Co System, Complex Metallic Alloy, Differential Thermal Analysis, Energy-Dispersive X-Ray Spectroscopy, Phases of ε-Family, Scanning Electron Microscope (SEM), Transmission Electron Microscopy (TEM), U-Phase, X-Ray Diffraction (XRD)

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