| Auteur | Rechercher : Lee, S.Y.1; Rechercher : Gharghouri, M.A.1; Rechercher : Root, J.H.1 |
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| Affiliation | - Conseil national de recherches du Canada. Centre canadien de faisceaux de neutrons du CNRC
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| Format | Texte, Article |
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| Conférence | Magnesium Technology 2011 - TMS 2011 Annual Meeting and Exhibition, 27 February 2011 through 3 March 2011, San Diego, CA |
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| Sujet | Al alloys; Compressive loading; Cyclic loadings; Deformation mechanism; Deformation twinning; Detwinning; Diffraction peaks; Elastic-plastic transition; Grain orientation; In-situ; In-situ neutron diffraction; Nonlinear behavior; Plastic deformation behavior; Tensile loading; Exhibitions; Extrusion; Magnesium; Magnesium alloys; Neutron diffraction; Poles; Precipitation (chemical); Tensile strength; Twinning; Unloading; Plastic deformation |
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| Résumé | In-situ neutron diffraction has been employed to study the deformation mechanisms in a precipitation-hardened and extruded Mg-8.5wt.% Al alloy subjected to compression followed by reverse tension. The starting texture is such that the basal poles of most grains are oriented normal to the extrusion axis and a small portion of grains are oriented with the basal pole parallel to the extrusion axis. Diffraction peak intensities for several grain orientations monitored in-situ during deformation show that deformation twinning plays an important role in the elastic-plastic transition and subsequent plastic deformation behavior. Significant non-linear behavior is observed during unloading after compression and appears to be due to detwinning. This effect is much stronger after compressive loading than after tensile loading. |
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| Date de publication | 2011 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21271552 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 8bbdfe75-0a81-4dd9-a8f0-9cd90e47df52 |
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| Enregistrement créé | 2014-03-24 |
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| Enregistrement modifié | 2020-04-21 |
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