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The Evolution of Short-Range Order in Ti-Hf-Ni Alloys with Hydrogenation

Published online by Cambridge University Press:  01 February 2011

Anne Sadoc
Affiliation:
LPMS, Université de Cergy-Pontoise, Neuville sur Oise, 95031 Cergy-Pontoise Cedex, France LURE, Centre Universitaire Paris-Sud, BP 34, 91898 Orsay Cedex, France
Van T. Huett
Affiliation:
Department of Physics, Washington University, St. Louis, MO 63130, USA.
K. F. Kelton
Affiliation:
Department of Physics, Washington University, St. Louis, MO 63130, USA.
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Abstract

The evolution of the short-range order in a Ti-Hf-Ni 3/2 approximant phase, has been studied as a function of hydrogenation by means of extended X-ray absorption fine structure (EXAFS). The local structure of the non-hydrogenated alloy has been derived from that of 1/1 Ti-Zr-Ni. After hydrogenation, drastic changes are observed in the local structure of Ti-Hf-Ni. Preliminary results of the EXAFS analysis are also presented for an amorphous Ti-Hf-Ni alloy.

Type
Research Article
Copyright
Copyright © Materials Research Society 2004

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References

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