X-ray Scattering Study of Cu-Ni Solid Solutions

 

M. Bournane1*, Y. Sadaoui 2, A. F. Sirenko 3

1  Centre Universitaire des Recherches sur l’Aluminium, Université du Québec à Chicoutimi, Canada                                                                        

2 Département de Physique, Université Mou1oud Mammeri de Tizi-Ouzou, Algeria

3   Department of Solid Physics, Kharkov National University, Ukraine.

* Corresponding author. E-mail: mbournan@uqac.ca

Received: 29 September 2009; revised version accepted: 17 October 2009

 

Abstract

The angle X-ray scattering intensity of Cu-Ni alloys was investigated. Short-range order coefficients for 10 coordination spheres were determined. It was established that annealing at 473 K of alloys quenched from a temperature close to the solidus leads to the formation of a cluster structure. The average size of the clusters and the mean distance between them were estimated. It was found that Ni concentration of clusters depends on heat treatment and can exceed by 10-12% the average alloy concentration. The clusters formation is attributed to the interaction between the Ni magnetic moments.

 

Keywords: Clusters; x-rays; Annealing; Solid solution; Short range.

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