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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Veröffentlicht in:	Technical physics letters 2019-03, Vol.45 (3), p.288-291
Hauptverfasser:	Sapozhnikov, K. V., Nikolaev, V. I., Krymov, V. M., Kustov, S. B.
Format:	Artikel
Sprache:	eng
Schlagworte:	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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Beschreibung
Zusammenfassung:	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