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Microstructure, texture and mechanical properties of cyclic expansion-extrusion deformed pure copper

Abstract : A recently developed severe plastic deformation technique, cyclic expansion-extrusion (CEE), was applied on a commercial pure copper to investigate the relationship between microstructure, texture and mechanical properties over a wide range of strains. Microstructure and crystallographic texture investigations were performed by optical microscopy, electron back scattering and X-ray diffraction. Significant evolution in grain refinement was achieved down to sub-micron grain size. A considerable texture evolution was also observed within the deformation zone with the extrusion as the decisive step for the final texture. Fiber deformation textures were observed; the < 111 > component was found to be the main texture component while the < 100 > component became significant only at very large strains. The evolution in hardness and tensile properties was studied and a clear relationship between texture evolution, microstructural parameters and mechanical properties was found and discussed.
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https://hal.univ-lorraine.fr/hal-01514734
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Submitted on : Wednesday, April 26, 2017 - 4:03:01 PM
Last modification on : Tuesday, October 19, 2021 - 11:46:26 AM

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N. Pardis, Cai Chen, R. Ebrahimi, Laszlo S. Toth, C. F. Gu, et al.. Microstructure, texture and mechanical properties of cyclic expansion-extrusion deformed pure copper. Materials Science and Engineering: A, Elsevier, 2015, 628, pp.423-432. ⟨10.1016/j.msea.2015.01.003⟩. ⟨hal-01514734⟩

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