Residual stresses and microstructural evolution of ECAPed AA2017
| العنوان: | Residual stresses and microstructural evolution of ECAPed AA2017 |
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| المؤلفون: | L. Romero-Resendiz, José-María Cabrera, Gonzalo Gonzalez, Ignacio A. Figueroa, Chedly Braham, C. Reyes-Ruiz |
| المساهمون: | Universidad Nacional Autónoma de México (UNAM), Universitat Politècnica de Catalunya [Barcelona] (UPC), Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM), Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Instituto de Investigaciones en Materiales (Mexico, Mexico) |
| المصدر: | Materials Characterization Materials Characterization, Elsevier, 2019, 152, pp.44-57. ⟨10.1016/j.matchar.2019.04.007⟩ |
| بيانات النشر: | HAL CCSD, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | 010302 applied physics, Materials science, Misorientation, Mechanical Engineering, 02 engineering and technology, Sciences de l'ingénieur, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Indentation hardness, Stress (mechanics), [SPI]Engineering Sciences [physics], Mechanics of Materials, Residual stress, 0103 physical sciences, General Materials Science, Texture (crystalline), Composite material, Deformation (engineering), Dislocation, 0210 nano-technology, Al-alloy - ECAP - Texture - Residualstress - Dynamicrecovery, Electron backscatter diffraction |
| الوصف: | International audience; The mechanical behavior and microstructural evolution of an AA2017 aluminum alloy processed by ECAP with an equivalent simple shear deformation of ∼6 at 200 °C were studied. Samples were characterized by means of scanning electron microscopy (SEM-EDS- EBSD), image-assisted by focus ion beam (FIB), Vickers microhardness and X-ray diffraction (XRD) techniques. During the deformation process, the Al 2 Cu precipitates did not get fragmented or re-absorbed in the Al matrix. After the first ECAP pass, at least 50% of grains displayed an ultrafine size. The EBSD analysis showed an increment of the misorientation angle immediately after the first ECAP pass. The macrotexture evolution was explained in terms of the formation of f1: A 1θ ∗ , A θ , Ā θ , A 2θ ∗ , f2: C θ , B¯ θ , B θ , Ā θ , A θ , A 1θ ∗ and f3: C θ , B θ , B¯ θ , A θ , Ā θ , A 2θ ∗ fibers. The macro-residual stress measurements of the highly deformed samples showed linear sin 2 ψ profiles. The micro and macro-residual stresses were compatible with dislocation rearrangement, in which the annihilation and formation were in quasi-equilibrium. It was found that the highest microhardness value (1176 MPa) and grain refinement (at least 20% of grains showed a size smaller than 100 μm 2 ) appeared after the first extrusion pass. The decrease in hardness, after the second pass and the residual stress stability, could be associated to a dynamic recovery phenomenon. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1044-5803 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e07ffb3dea950e86266142aa8c4ad9b6Test https://hal.archives-ouvertes.fr/hal-02165154/documentTest |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....e07ffb3dea950e86266142aa8c4ad9b6 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10445803 |
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