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Cu Rich Nanostructured Alloys with Enhanced Mechanical Properties

Published online by Cambridge University Press:  01 February 2011

K. G. Georgarakis ,
K. Ota ,
A. LeMoulec ,
F. Charlot ,
A. R. Yavari  and
G. Vaughan
K. G. Georgarakis
Affiliation:
georgara@ltpcm.inpg.fr, Institut National Polytechnique de Grenoble, Euronano, SIMAP-CNRS, 1130 rue de la Piscine, St Martin d'Heres, 38402, France, +33-(0)476826641, +33-(0)476826641
K. Ota
Affiliation:
euronano@ltpcm.inpg.fr, Institut National Polytechnique de Grenoble, Euronano, SIMAP-CNRS, 1130 rue de la Piscine, St Martin d'Heres, 38402, France
A. LeMoulec
Affiliation:
euronano@ltpcm.inpg.fr, Institut National Polytechnique de Grenoble, Euronano, SIMAP-CNRS, 1130 rue de la Piscine, St Martin d'Heres, 38402, France
F. Charlot
Affiliation:
euronano@ltpcm.inpg.fr, Institut National Polytechnique de Grenoble, Euronano, SIMAP-CNRS, 1130 rue de la Piscine, St Martin d'Heres, 38402, France
A. R. Yavari
Affiliation:
euronano@ltpcm.inpg.fr, Institut National Polytechnique de Grenoble, Euronano, SIMAP-CNRS, 1130 rue de la Piscine, St Martin d'Heres, 38402, France
G. Vaughan
Affiliation:
vaughan@esrf.fr, European Synchrotron Radiation Facilities, Grenoble, 38042, France
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Abstract

New copper rich alloys with elemental additions of transition metals and group IIIA and IVA elements have been prepared by casting and rapid solidification. The prepared alloys show very interesting microstructures; a thick surface layer with nanocrystalline eutectic like structure, while in the bulk the microstructure is coarser lamellar or dendritic. Their microhardness was found to be exceptionally high for Cu rich alloys, reaching values of 450-550HV. Furthermore, the microhardness of the surface layer is higher than that in the bulk, indicating that these alloys can be considered for a variety of applications including tribological and structural.

Keywords

rapid solidificationnanostructureCu
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1056: Symposium HH – Nanophase and Nanocomposite Materials V , 2007 , 1056-HH08-52
Copyright
Copyright © Materials Research Society 2008

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References

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