Dislocation Structure Evolution in Low-Stability States of Solid Solutions of Alloys Under Their Deformation

Russian Physics Journal - The results of a study of the dislocation structure evolution in polycrystals of homogeneous solid solutions in low-stability states in Cu-Mn-based alloys with FCC crystal...     

Critical Grain Size at Meso-Level after Deformation of Polycrystalline Metals and Alloys in Low-Stability State

Russian Physics Journal - The paper deals with the dislocation and dislocation-disclination substructures of polycrystalline FCC alloys Cu–Al and Cu–Mn modified by tensile deformation....     

Evolution of the dislocation structure and the stage of work-hardening of Ni3Fe alloy with [001] orientation

Using transmission diffraction electron microscopy, the dislocation structure of work-hardened iron nickel alloy with the compression axis in [001] orientation is studied over a wide interval of gradual strain. A connection is established between the change of the flow curve and the type of substructure formed. The quantitative characteristics of the observed structural types are determined and their behavior at different stages of the strain curve is traced.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 18–24, February, 1988.     

Effect of solid-solution concentration on the type and parameters of the dislocation structure formed in the process of deformation of the alloys Cu-Mn and Cu-Al

A comparative study of the evolution of dislocation structure accompanying deformation in the alloys Cu-Mn and Cu-Al for concentrations 0–19 at.% Mn and 0.5–14 at.% Al was performed by the method of transmission diffraction electron microscopy. It was determined that the concentration of the solid solution affects the character of the evolution and the parameters of the substructure. It was found that the type of observed substructures are virtually identical for the alloys of both systems, but in contrast to the alloys Cu-Al twinning does not occur in Cu-Mn. In the solid solution Cu-Mn the substructures are observed to change at higher concentrations than in the alloys Cu-Al. It was established that a decrease in the packing-defect energy affects the change in the substructure in the same direction as does an increase in solid solution hardening.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 10, pp. 60–66, October, 1991.     

Defect structure near grain boundaries in deformed polycrystalline Cu–Al alloys

The evolution of defect structure upon the deformation of Cu–Al polycrystalline solid solutions with grain sizes of 10, 100, and 200 μm is studied by means of transmission diffraction electron microscopy. Alloys are deformed by tension at a rate of 10^?2 s^?1 at room temperature. Different parameters that characterize defect structure are measured. Patterns of changes in them are revealed upon moving away from grain boundaries. Analysis of the results testifies to the presence of a reinforced zone near the grain boundaries.     

Evolution of Dislocation Structure Parameters in Deformed Polycrystalline FCC Solid Solutions

Russian Physics Journal - The paper presents the research results of the strain hardening and evolution of the dislocation structure parameters in Cu–Mn polycrystalline solid solutions having...     

Evolution of Microstructure and its Parameters after Deformation of Polycrystalline Cu-Al Alloys with Different Stacking Fault Energy

Russian Physics Journal - Transmission electron microscopy (TEM) is used to investigate the evolution of the dislocation substructure after active plastic deformation of copper-aluminum alloys with...