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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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Chiu, Yu-Lung
University of Birmingham
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024In-Situ synchrotron investigation of elastic and tensile properties of oxide dispersion strengthened EUROFER97 steel for advanced fusion reactorscitations
- 2021A study on the phase transformation of γ2-Al8Mn5 to LT-Al11Mn4 during solutionizing in AZ91 alloycitations
- 2021The defect evolution in 1-D shocked tantalum single crystalscitations
- 2021Role of La addition for enhancing the corrosion resistance of Mg–Dy alloycitations
- 2020Mechanical property evaluation of second phase particles in a Mg–8Al-0.5Zn alloy using micropillar compressioncitations
- 2019Mesoscopic quantitative chemical analyses using STEM-EDX in current and next generation polycrystalline Ni-based superalloyscitations
- 2018The defect evolution in shock loaded tantalum single crystalscitations
- 2018In situ synchrotron X-ray diffraction characterization of corrosion products of a Ti-based metallic glass for implant applicationscitations
- 2014Micro-tensile strength of a welded turbine disc superalloycitations
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article
A study on the phase transformation of γ2-Al8Mn5 to LT-Al11Mn4 during solutionizing in AZ91 alloy
Abstract
<p>γ<sub>2</sub>-Al<sub>8</sub>Mn<sub>5</sub> intermetallic particles are generally present in commercial Mg-Al-Zn alloys. The present study is concerned with the effect of solutionizing on the morphology and phase stability of the γ<sub>2</sub>-Al<sub>8</sub>Mn<sub>5</sub> particles in an as-cast AZ91 alloy. Analysis using energy dispersive spectroscopy (EDS) and electron back scattered diffraction (EBSD) in a scanning electron microscope (SEM), transmission electron microscopy (TEM) and atom probe tomography (APT) suggests that solutionizing resulted in uphill diffusion of Al from the α-Mg matrix resulting in the phase transformation of γ<sub>2</sub>-Al<sub>8</sub>Mn<sub>5</sub> to Low Temperature (LT) -Al<sub>11</sub>Mn<sub>4</sub> phase. This leads to a shell type structure of LT-Al<sub>11</sub>Mn<sub>4</sub> encapsulating γ<sub>2</sub>-Al<sub>8</sub>Mn<sub>5</sub> and the formation of cracks in the LT-Al<sub>11</sub>Mn<sub>4</sub> phase. These can propagate during external loading, affecting the mechanical properties. Additionally, the content of Fe and Si decreased in the LT-Al<sub>11</sub>Mn<sub>4</sub>, which could potentially decrease locally the corrosion resistance.</p>