Speaker
Mr
Timofey Tolmachev
(M.N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences (IMP UB RAS))
Description
Systems of positive enthalpy of mixing Cu-Ag and Au-Co in a condition of powder mixtures were processed by high pressure torsion at 293 K (cold deformation) and 80 K (cryodeformation). Original concentration of the elements for Cu-Ag was 80:20 at.% respectively and for Au-Co were 80:20 and 50:50 at.% respectively. The samples were studied by an X-ray diffraction analysis by synchrotron radiation at a wavelength of 0.03685 nm. It was found that the substitution solid solutions on the base of Cu for Cu-Ag and on the base of Au for Au-Co are formed. Besides that another phases as a result of decay or incomplete dissolution was also recorded. It was revealed that for Cu-Ag the cryogenic temperature effect during strain at constant pressure doesn't contribute to increase the content of Ag in solid solution. But for Au-Co this effect is reversal. More than that each of the following factors promote to increase the Co content in solid solution: increasing of pressure, reducing the temperature to cryogenic one, increasing of the applied strain and, of course, increasing of Co content in original mixing.
Primary author
Mr
Timofey Tolmachev
(M.N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences (IMP UB RAS))
Co-authors
Dr
Alexander Patselov
(M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences)
Mr
Alexey Ancharov
(Institute of Solid State Chemistry and Mechanochemistry SB RAS)
Mr
Evgeniy Chernyshev
(M.N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences)
Dr
Vitaliy Pilyugin
(M.N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences (IMP UB RAS))
