Speaker
Prof.
Yulia Solov'eva
(Tomsk State University of Architecture and Building)
Description
The loss of stability of the homogenous plastic deformation of single crystal specimens of the Ni3Ge alloy was investigated under uniaxial constant-rate compressive loading. A phenomenon of high temperature strain superlocalization was observed. Plastic deformation in this case occurred in a band a few tens of microns wide, reaching the values of hundreds of percent. Using synchrotron radiation it was shown that the phenomenon of strain superlocalization is associated with the formation of polycrystalline substructure in the strain localization band. Order-disorder phase transition and amorphous phase formation in superlocalized shear bands were revealed.
This work was supported by the Russian Foundation for Basic Research (project No. 16-03-00182-a). X-ray synchrotron measurements were carried out at the experimental station Diffractometry in the “Hard” X-ray Range at the Center of Collaborative Access of the Siberian Synchrotron and Terahertz Radiation Center, Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk.
Primary author
Prof.
Yulia Solov'eva
(Tomsk State University of Architecture and Building)
Co-authors
Mr
Alexey Ancharov
(Institute of Solid State Chemistry and Mechanochemistry SB RAS)
Prof.
Svetlana Starenchenko
(Tomsk State University of Architecture and Building)
Prof.
Vladimir Starenchenko
(Tomsk State University of Architecture and Building)
