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Measured and calculated thermoelastic properties of supersaturated fcc Ni(Al) and Ni(Zr) solid solutions

Published online by Cambridge University Press:  31 January 2011

J. Bøttiger ,
N. Karpe ,
J. P. Krog  and
A. V. Ruban
J. Bøttiger
Affiliation:
Institute of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark
N. Karpe
Affiliation:
Department of Solid State Physics, The Royal Institute of Technology, S-10044 Stockholm, Sweden
J. P. Krog
Affiliation:
Institute of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark
A. V. Ruban
Affiliation:
Center for Atomic-scale Materials Physics and Physics Department, Technical University of Denmark, DK-2800, Lyngby, Denmark
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Abstract

Metastable face-centered cubic (fcc) solid solutions of Ni1–xAlx and Ni1–xZrx have been prepared in thin-film form using dc planar magnetron sputtering in a UHV system. In both these alloy systems, extended solubilities in the fcc phase and a pronounced (111) texture are observed after sputter deposition. An amorphous phase is found to form in Ni1–xAlx for x ≥ 0.30 and in Ni1–xZrx for x ≥ 0.05. Lattice constants, thermal expansion coefficients, and Debye temperatures were derived from x-ray diffraction measurements. These parameters were also calculated by using ab initio methods in the framework of the local-spin density and coherent potential approximations for the electronic subsystem and the Debye–Grüneisen model for the vibrational properties of the nuclei subsystem. Experiment and theory are compared and discussed.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 6 , June 1998 , pp. 1717 - 1723
Copyright
Copyright © Materials Research Society 1998

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