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Influence of boron content on the microstructure of sintered Al62.5−xCu25.3Fe12.2Bx alloys (x = 0, 3, 5)

Published online by Cambridge University Press:  01 October 2004

V. Brien ,
V. Khare ,
F. Herbst ,
P. Weisbecker ,
J-B. Ledeuil ,
M.C. de Weerd ,
F. Machizaud  and
J-M. Dubois
V. Brien*
Affiliation:
Laboratoire de Science et Génie des Matériaux et de Métallurgie, UMR 7584, CNRS-INPL-UHP, Parc de Saurupt, Ecole Nationale Supérieure des Mines de Nancy, 54042 Nancy Cedex, France
V. Khare
Affiliation:
Laboratoire de Science et Génie des Matériaux et de Métallurgie, UMR 7584, CNRS-INPL-UHP, Parc de Saurupt, Ecole Nationale Supérieure des Mines de Nancy, 54042 Nancy Cedex, France
F. Herbst
Affiliation:
Laboratoire de Sciences et Génie des Surfaces, UMR 7570, CNRS-INPL-EDF, Parc de Saurupt, ENSMN, 54042 Nancy Cedex, France
P. Weisbecker
Affiliation:
Laboratoire de Science et Génie des Matériaux et de Métallurgie, UMR 7584, CNRS-INPL-UHP, Parc de Saurupt, ENSMN, 54042 Nancy Cedex, France
J-B. Ledeuil
Affiliation:
Laboratoire de Science et Génie des Matériaux et de Métallurgie, UMR 7584, CNRS-INPL-UHP, Parc de Saurupt, ENSMN, 54042 Nancy Cedex, France
M.C. de Weerd
Affiliation:
Laboratoire de Science et Génie des Matériaux et de Métallurgie, UMR 7584, CNRS-INPL-UHP, Parc de Saurupt, ENSMN, 54042 Nancy Cedex, France
F. Machizaud
Affiliation:
Laboratoire de Science et Génie des Matériaux et de Métallurgie, UMR 7584, CNRS-INPL-UHP, Parc de Saurupt, ENSMN, 54042 Nancy Cedex, France
J-M. Dubois
Affiliation:
Laboratoire de Science et Génie des Matériaux et de Métallurgie, UMR 7584, CNRS-INPL-UHP, Parc de Saurupt, ENSMN, 54042 Nancy Cedex, France
*
a) Address all correspondence to this author. e-mail: valerie.brien@lpmi.uhp-nancy.fr
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Abstract

Microstructures and morphological features of a series of sintered quasicrystalline Al62.5−xCu25.3Fe12.2Bx alloys, with x ranging from 0 to 5 at.% were studied using x-ray diffraction, scanning electron microscopy, x-ray mapping, and electron probe microanalysis. Electron backscattering diffraction (EBSD) was also used to get information about the structures of some phases and identify the crystalline relationship in-between phases. Increasing x results in the change of the nature of extra phases. These secondary phases are all less than 1% in volume of the total matter except for the β phase at 5% of boron. Whatever the percentage of boron considered, boron seems to concentrate essentially in the parasite phases confirming doubts found in literature about the solubility of boron inside the face-centered-icosahedral Al–Cu–Fe phase. No special crystallographic relationship in between the tested phases could be spotted. EBSD is thus also confirmed as an excellent technique to get quasicrystalline grains orientations.

Keywords

MicrostructureQuasicrystalSolidification
Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 10 , October 2004 , pp. 2974 - 2980
Copyright
Copyright © Materials Research Society 2004

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