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Solidification study of Al-Co-Cu alloys using the Bridgman method

Journal of Alloys and Compounds 370(1-2): 198-205

Autoren/Herausgeber: Zhang LM
Gille P
Erschienen: 2004

The solidification of a series of Bridgman-grown Al-Co-Cu alloys with compositions in the vicinity of the quasicrystal was studied by powder X-ray diffraction (XRD), differential thermal analysis (DTA), electron microprobe analysis, and optical microscopy. The phase equilibria and microstructure of solidified alloys are presented; the temperatures of the involved solidification reactions were determined. These experimental data were used to construct a solidification phase diagram as to understand the crystallization path. The decagonal (D) AlCoCu quasicrystals form incongruently, but they can be primarily solidified from off-stoichiometric melts. (C) 2003 Elsevier B.V. All rights reserved.

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