Formation and properties of copper-silver solid solutions upon severe deformation under pressure

Autor:	A. I. Ancharov, T. P. Tolmachev, I. L. Solodova, V. P. Pilyugin, A. M. Patselov, E. G. Chernyshev, Olga V. Antonova
Rok vydání:	2014
Předmět:	Materials science Brittleness chemistry General Physics and Astronomy Thermodynamics chemistry.chemical_element Recrystallization (metallurgy) Thermal stability Crystallite Microstructure Copper Nanocrystalline material Solid solution
Zdroj:	Bulletin of the Russian Academy of Sciences: Physics. 78:988-995
ISSN:	1934-9432 1062-8738
Popis:	Nonequilibrium nanocrystalline FCC solid solutions are obtained via the mechanical alloying of Cu1.0 − x -Ag x powders (x = 0.1, 0.2, …, 0.9, 1.0) with deformation under pressure and their properties are investigated. The chemical homogeneity, microstructure, mechanical properties, and thermal stability of the alloys are investigated. The alloys have the positive deviation of lattice parameters from the Vegard law with crystallite sizes of 20 nm, hardness exceeding the initial values of the components by 4.5–6 times, and a brittle character of fracture. The thermally induced decomposition of nonequilibrium solutions starts at temperatures close to room and is complete after heating to 500°C with the development of collective recrystallization.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ef41815bc63679c415522324c5f3cfc9 https://doi.org/10.3103/s1062873814100189 Zobrazit plný text záznamu Full text from SpringerLink