| People | Locations | Statistics |
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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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Burnett, Tl
University of Manchester
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (28/28 displayed)
- 2024Exploration of fs-laser ablation parameter space for 2D/3D imaging of soft and hard materials by tri-beam microscopycitations
- 2024Damage evolution in multilayer braided composite tubes under torsion studied by in-situ X-ray Computed Tomography (CT)
- 2024The role of cavitation in the toughening of elastomer nanocomposites reinforced with graphene nanoplateletscitations
- 2023Computational study of the geometrical influence of grain topography on short crack propagation in AA7XXX series alloyscitations
- 2023In situ observation of environmentally assisted crack initiation and short crack growth behaviour of new-generation 7xxx series alloys in humid aircitations
- 2022Large-scale serial sectioning of environmentally assisted cracks in 7xxx Al alloys using femtosecond Laser-PFIBcitations
- 2022Embedded 3D printing of Multi-material composites
- 2022Tailoring the microstructure of lamellar Ti3C2Tx MXene aerogel by compressive strainingcitations
- 2021X-ray Tomographic Observation of Environmental Assisted Cracking in Heat-treated Lean Duplex Stainless Steelcitations
- 2021Multiscale analysis of grain boundary microstructure in high strength 7xxx Al alloyscitations
- 2020Environmentally induced crack (EIC) initiation, propagation, and failure: A 3D in-situ time-lapse study of AA5083 H131citations
- 2020Redistribution of carbon caused by butterfly defects in bearing steelscitations
- 2020Tracking polycrystal evolution non-destructively in 3D by laboratory X-ray diffraction contrast tomographycitations
- 2020X-Ray Tomographic Characterisation of Pitting Corrosion in Lean Duplex Stainless Steelcitations
- 2019On the application of Xe+ plasma FIB for micro-fabrication of small-scale tensile specimenscitations
- 2019Initiation and short crack growth behaviour of environmentally induced cracks in AA5083 H131 investigated across time and length scalescitations
- 2019Completing the picture through correlative characterizationcitations
- 2018Atomic-Scale Insights into the Oxidation of Aluminumcitations
- 2018Multi-Modal Plasma Focused Ion Beam Serial Section Tomography of an Organic Paint Coatingcitations
- 2018Ductile Fracture Assessment of 304L Stainless Steel Using 3D X-ray Computed Tomographycitations
- 2018Realizing the theoretical stiffness of graphene in composites through confinement between carbon fiberscitations
- 2017Degradation of metallic materials studied by correlative tomographycitations
- 2017Time-lapse lab-based X-ray nano-CT study of corrosion damagecitations
- 2017Multiscale correlative tomography: an investigation of creep cavitation in 316 stainless steelcitations
- 2016Xe+ Plasma FIB: 3D Microstructures from Nanometers to Hundreds of Micrometerscitations
- 2015Large volume serial section tomography by Xe Plasma FIB dual beam microscopycitations
- 2014Correlative tomographycitations
- 2013Simultaneous measurement of X-ray powder diffraction and ferroelectric polarisation data as a function of applied electric field at a range of frequenciescitations
Places of action
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article
Multiscale analysis of grain boundary microstructure in high strength 7xxx Al alloys
Abstract
The size, distribution and chemical composition of grain boundary η-phase precipitates (GBPs) and micro-segregation present in thick plate (140 mm) 7xxx Al alloys has been quantified across a range of length scales. To address the known limitations of individual characterisation methods, a number of cross-correlated, high resolution techniques have been used, including atom probe tomography (APT). A new-generation high-Zn alloy (AA7085) has been compared to a more established material, AA7050, in T7651 temper conditions. The results show that high angle grain boundaries in both alloys are dominated by quench-induced GBPs (Q-GBPs), covering up to ~40% of the area in AA7050. When viewed on brittle intergranular fracture surfaces and in 3D, the Q-GBPs appear much larger than previously reported and exhibit complex branched, dendritic-like morphologies. In AA7050, the Q-GBPs contain substantially higher levels of Cu (by 29 %) and Al (by 37%) and lower Zn (by 33 %) than AA7085. Classical modelling demonstrates that these differences result from different transformation pathways, with precipitates in the more quench sensitive AA7050 alloy nucleating at higher temperatures, which exaggerates the effect of alloy chemistry. In both alloys GB segregation was limited, with low levels of Zn detected relative to the matrix, but more Mg and less Cu in AA7050. It is, therefore, proposed that the higher Cu and Al, and lower Zn content, of the large Q-GBPs present in AA7050 is the main difference in GB microchemistry between the two materials and is the primary reason its GBs are less chemically active. The implications for the relative susceptibilities of the alloys to environmentally assisted cracking are briefly discussed.