Investigation of texture and mechanical properties of copper processed by new route of equal channel angular pressing |
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| Affiliation: | 1. Department of Materials Engineering, Isfahan University of Technology, 8415683111 Isfahan, Iran;2. Department of Mining, Metals and Materials Engineering, McGill University, Montreal, Canada QC H3A 2B2;3. Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, Canada SK S7N 5A9;1. Applied Physics, Chalmers University of Technology, Gothenburg, Sweden;2. Civil and Mechanical Engineering Department, University of Cassino and Southern Lazio, Cassino, Italy;1. Departamento de Engenharia de Materiais, Universidade Federal de São Carlos, Via Washington Luiz, km 235, São Carlos 13565-905, SP, Brazil;2. SiMap Laboratory CNRS, UMR 5266 INPG – UJF, Grenoble, BP 75, 38402 St-Martin d''Hères, France;3. LEPMI CNRS, UMR 5279 INPG – UJF, Grenoble, BP 75, 38402 Saint Martin d''Hères, France;4. Engenharia de Materiais Metálicos, Universidade Federal de São Paulo, R. Talim 330, 12231-280 São José dos Campos, SP, Brazil;5. Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089-1453, USA;6. Materials Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, UK;1. Division of Materials Science and Engineering, Hanyang University, Seoul, South Korea;2. Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, Los Angeles, United States;3. Department of Energy Systems Research, Ajou University, Suwon, South Korea;4. Materials Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton, United Kingdom;5. Institute for Metals Superplasticity Problems, Ufa, Russia;1. Department of Manufacturing Engineering, College of Technological Studies, P.A.A.E.T., P.O. Box 42325, Shuwaikh 70654, Kuwait;2. Department of Mechanical Engineering, College of Engineering & Petroleum, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait;3. Materials Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, UK;4. Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089-1453, USA |
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| Abstract: | The evolution of crystallographic texture and the mechanical properties of copper subjected to severe plastic deformation (SPD) using equal channel angular pressing (ECAP) were investigated. Samples were subjected to ECAP under two different processing routes: B60 and BC. As the cross sections of the samples were circular, a new route with a rotation angle of 60° in the same direction between consecutive passes was introduced. The material exhibited texture development similar to the simple shear texture in both routes and the most significant changes in texture strength in both processing routes took place after the second pass. Microstructure of ECAP processed samples were investigated using electron backscatter diffraction (EBSD) analysis. Comparison of the EBSD data with optical micrograph of the initial sample confirmed that ECAP process has led to a significant decrease in grain size. Significant increases in hardness and tensile strength were observed after the first pass of ECAP. Variations of tensile strength as a function of the number of passes were related to the dislocation densities and the average boundary spacing. |
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