The Influence of Thermal Treatment on Elastic and Anelastic Properties of Ni55Fe18Ga27 Alloy Single Crystals

We have studied the influence of thermal treatment on the dynamic Young’s modulus, linear and nonlinear internal friction, and Young’s modulus defect of Ni 55 Fe 18 Ga 27 alloy single crystals. Strong variations of all these parameters were observed and explained by changes in the concentration of v...

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Bibliographic Details
Published in:Technical physics letters 2019-03, Vol.45 (3), p.288-291
Main Authors: Sapozhnikov, K. V., Nikolaev, V. I., Krymov, V. M., Kustov, S. B.
Format: Article
Language:English
Subjects:
Anelasticity
Classical and Continuum Physics
Crystal defects
Crystal lattices
Elastic properties
Heat treatment
Internal friction
Lattice vacancies
Nickel base alloys
Physics
Physics and Astronomy
Single crystals
Storage modulus
Twin boundaries
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Summary:We have studied the influence of thermal treatment on the dynamic Young’s modulus, linear and nonlinear internal friction, and Young’s modulus defect of Ni 55 Fe 18 Ga 27 alloy single crystals. Strong variations of all these parameters were observed and explained by changes in the concentration of vacancies in the crystal lattice. It is concluded that vacancies form atmospheres near twin boundaries, the density of which (but not their extension) strongly depend on the concentration of vacancies.
ISSN:1063-7850
1090-6533
DOI:10.1134/S1063785019030349