The formation, structure, and properties of the Au–Co alloys produced by severe plastic deformation under pressure
- Authors: Tolmachev T.P.1, Pilyugin V.P.1, Ancharov A.I.2, Chernyshov E.G.1, Patselov A.M.1
-
Affiliations:
- Mikheev Institute of Metal Physics, Ural Branch
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch
- Issue: Vol 117, No 2 (2016)
- Pages: 135-142
- Section: Structure, Phase Transformations, and Diffusion
- URL: https://journals.rcsi.science/0031-918X/article/view/166594
- DOI: https://doi.org/10.1134/S0031918X16020125
- ID: 166594
Cite item
Abstract
The mechanical alloying of Au–Co mixtures, which are systems with high positive mixing enthalpy, is studied following high-pressure torsion deformation at room and cryogenic temperatures. X-ray diffractometry in synchrotron radiation and scanning microscopy are used to investigate the sequence of structural changes in the course of deforming the mixtures up to the end state of the fcc substitutional solid solution based on gold. The mechanical properties of the alloys are measured both during mixture processing and after mechanical alloying. Microfractographic studies are performed. Factors that facilitate the solubility of Co in Au, namely, increased processing pressure, cobalt concentration in a charge mixture, true strain, and temperature decreased to cryogenic level have been identified.
About the authors
T. P. Tolmachev
Mikheev Institute of Metal Physics, Ural Branch
Author for correspondence.
Email: tolmachev@imp.uran.ru
Russian Federation, ul. S. Kovalevskoi 18, Ekaterinburg, 620990
V. P. Pilyugin
Mikheev Institute of Metal Physics, Ural Branch
Email: tolmachev@imp.uran.ru
Russian Federation, ul. S. Kovalevskoi 18, Ekaterinburg, 620990
A. I. Ancharov
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch
Email: tolmachev@imp.uran.ru
Russian Federation, ul. Kutateladze 18, Novosibirsk, 630128
E. G. Chernyshov
Mikheev Institute of Metal Physics, Ural Branch
Email: tolmachev@imp.uran.ru
Russian Federation, ul. S. Kovalevskoi 18, Ekaterinburg, 620990
A. M. Patselov
Mikheev Institute of Metal Physics, Ural Branch
Email: tolmachev@imp.uran.ru
Russian Federation, ul. S. Kovalevskoi 18, Ekaterinburg, 620990