The Microstructure and Deformation Behavior
of the Ordered Cu–56 at % Au Alloy

O. V. Antonova; Антонова О. В.; O. S. Novikova; Новикова О. С.; A. Yu. Volkov; Волков А. Ю.; A. A. Livinets; Ливинец А. А.; P. O. Podgorbunskaya; Подгорбунская П. О.

doi:10.31857/S001532302260112X

The Microstructure and Deformation Behavior of the Ordered Cu–56 at % Au Alloy

Authors: Antonova O.V.¹, Novikova O.S.¹, Volkov A.Y.¹, Livinets A.A.¹, Podgorbunskaya P.O.¹^,2
Affiliations:
1. M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences
2. Ural Federal University Named after the First President of Russia B.N. Yeltsin
Issue: Vol 124, No 1 (2023)
Pages: 91-97
Section: СТРУКТУРА, ФАЗОВЫЕ ПРЕВРАЩЕНИЯ И ДИФФУЗИЯ
URL: https://ruspoj.com/0015-3230/article/view/662817
DOI: https://doi.org/10.31857/S001532302260112X
EDN: https://elibrary.ru/KPRZVE
ID: 662817

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Abstract

The microstructural evolution of the ordered Cu–56 at % Au alloy under plastic deformation has been studied. It has been revealed that under the influence of deformation, the с-domain structure is origi-nally destroyed, and the lamellar structure demonstrates a higher stability under deformation impacts. It has been demonstrated that deformation to 70% leads to the formation of ultrafine-grained two-phase (order + disorder) structure in the alloy. Based on the results of mechanical tensile tests, the deformation behavior of the ordered and disordered alloys has been analyzed. It has been concluded that the mechanical properties of the moderately deformed (to ~20%) ordered Cu–56 at % Au alloy may be of interest for practical appli-cations.

Keywords

Cu–Au system, atomic ordering, superstructure, mechanical tests, transmission electron microscopy

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