TECHNOLOGIES

Stress-strain state of workpiece from Cu-Cr alloy processed by severe plastic deformation by ECAP

  • 1 Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, Ufa, Russia; Institute of Molecule and Crystal Physics, Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa, Russia
  • 2 Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, Ufa, Russia

Abstract

It is known that under conditions of large/severe plastic deformations in alloys occurs significant refinement and change in diffusion activity associated with an increase in the number of vacancies in the material and thermodynamic conditions affecting the kinetics of the decomposition of a supersaturated solid solution of alloying elements in the matrix. In works describing these processes, the role of thermal the effect of deformation, which is especially pronounced at high speeds and degrees of deformation, in as a result of which the temperature of the workpiece can rise by hundreds of degrees, exceeding the recrystallization thresholds. In this regard, work in the direction of determining the dependences of phase transformations and structural changes from thermomechanical conditions of the deformation process of lowalloyed dispersion-hardening copper alloys are relevant, and the creation of scientific foundations using these patterns determines the novelty of the proposed research.

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