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Grain Growth and Phase Formation in Ion Irradiated/Annealed Thin Ni-Al Alloys Films

Published online by Cambridge University Press:  25 February 2011

Dale E. Alexander ,
Gary S. Was  and
Lynn E. Rehn
Dale E. Alexander
Affiliation:
Department of Nuclear Engineering, university of Michigan, Ann Arbor, MI 48109
Gary S. Was
Affiliation:
Department of Nuclear Engineering, university of Michigan, Ann Arbor, MI 48109
Lynn E. Rehn
Affiliation:
Argonne National Laboratory, Argonne, IL 60439
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Abstract

Ion irradiation and annealing studies were performed on Ni, Ni-20 at.%Al multilayers and Ni-20 at.%Al co-evaporated thin films. Xe+ ions were used to irradiate the films and homogenize the multilayers at room temperature. Irradiation of alloy films formed a metastable, supersaturated solid solution of γ phase and an HCP phase. Ion induced grain growth occurred in all films. A factor of 2 greater growth was observed in Ni-Al multilayers compared with coevaporated films irradiated to the same dose. The enhancement is attributed to a heat of mixing effect. Post irradiation annealing of the mixed multilayers formed γ*, the morphology of which was dependent upon the presence of Cu in the films due to substrate mixing from the support grid.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 157: Symposium A – Beam-Solid Interactions: Physical Phenomena , 1989 , 155
Copyright
Copyright © Materials Research Society 1990

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References

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