Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 410, Issue -, Pages 169-173Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2005.08.070
Keywords
nanostructures; severe plastic deformation; lattice defect annealing; deformation induced vacancies
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Cu rods have been deformed by equal channel angular pressing (ECAP) up to shear strains gamma approximate to 5 while applying various deformation paths A, B-C and C. X-ray Bragg profile analyses (XPA), differential scanning calorimetry (DSC) as well as residual electrical resistivity (RER) measurements have been performed, in order to detect the densities of various deformation induced lattice defects and/or their arrangements. The results have been analysed in terms of annealing of deformation induced dislocations and vacancies (vacancy agglomerates). Compared to conventional cold work procedures, deformation by ECAP achieves a strongly enhanced concentration of vacancy type defects. (c) 2005 Elsevier B.V. All rights reserved.
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