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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Robson, Joseph D.
University of Manchester
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2023Mitigation effects of over-aging (T73) induced intergranular corrosion on stress corrosion cracking of AA7075 aluminum alloy and behaviors of η phase grain boundary precipitates during the intergranular corrosion formationcitations
- 2023Mapping Plastic Deformation Mechanisms in AZ31 Magnesium Alloy at the Nanoscalecitations
- 2023LaserbeamFoam: Laser Ray-Tracing and Thermally Induced State Transition Simulation Toolkitcitations
- 2023Interactions between plastic deformation and precipitation in Aluminium alloys: A crystal plasticity modelcitations
- 2022Modelling dynamic precipitation in pre-aged aluminium alloys under warm forming conditionscitations
- 2022Simulating intergranular hydrogen enhanced decohesion in aluminium using density functional theorycitations
- 2021Preageing of Magnesium Alloyscitations
- 2020Friction stir welding/processing of metals and alloys: A comprehensive review on microstructural evolutioncitations
- 2019Reducing yield asymmetry and anisotropy in wrought magnesium alloys – a comparative studycitations
- 2019The Effect of Precipitates on Twinning in Magnesium Alloyscitations
- 2018Numerical simulation of grain boundary carbides evolution in 316H stainless steelcitations
- 2017How magnesium accommodates local deformation incompatibility: a high-resolution digital image correlation studycitations
- 2016Process Optimization of Dual-Laser Beam Welding of Advanced Al-Li Alloys Through Hot Cracking Susceptibility Modelingcitations
- 2015Compositional variations for small-scale gamma prime (γ′) precipitates formed at different cooling rates in an advanced Ni-based superalloycitations
- 2015Grain Boundary Segregation of Rare-Earth Elements in Magnesium Alloyscitations
- 2014Contribution of twinning to low strain deformation in a Mg alloycitations
- 2013Constituent particles and dispersoids in an Al-Mn-Fe-Si alloy studied in three-dimensions by serial sectioningcitations
- 2013The effectiveness of surface coatings on preventing interfacial reaction during ultrasonic welding of aluminum to magnesiumcitations
- 2009Determination and interpretation of texture evolution during deformation of a zirconium alloy
Places of action
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article
How magnesium accommodates local deformation incompatibility: a high-resolution digital image correlation study
Abstract
The plastic deformation of single crystal magnesium is strongly anisotropic. This gives rise to deformation incompatibilities between grains during polycrystalline deformation, which are thought to limit ductility and formability. Wrought polycrystalline magnesium alloys are far from brittle, especially in uniaxial tension, implying that these incompatibilities can be accommodated to some extent, although it is not clear how. We have used high-resolution digital image correlation (HRDIC), supported by electron backscatter diffraction (EBSD), to study quantitatively and at the microstructural scale the accommodation of deformation incompatibility in the AZ31 magnesium alloy. Using a new gold remodelling procedure that improves the spatial resolution to 44 nm, we quantified the deformation heterogeneity after a small stretch in uniaxial tension. Our results confirm that polycrystalline deformation is very heterogeneous, with local axial true strains at grain boundaries 32 times higher than the applied average strain of 0. 027, and 18 times higher at slip bands within grains. The local and macroscopic deformation gradients are very different in character as well as magnitude. The resultant deformation incompatibility is accommodated primarily by gradients in basal slip and the activation of difficult slip in “hard” grains, giving rise to grain breakup, with a smaller contribution by enhanced grain boundary shear and twinning. These results imply that a homogeneous distribution of “hard” and “soft” grains can prevent the development of strain localization and therefore, that controlling texture and microtexture is a powerful way of enhancing the formability of magnesium alloys without reducing their single crystal plastic anisotropy.