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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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Bowen, Paul
University of Birmingham
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2023Thermomechanical Responses of Microcracks in a Honeycomb Particulate Filter
- 2020Spark plasma sintering of ceramics: from modeling to practicecitations
- 2019Mesoscopic quantitative chemical analyses using STEM-EDX in current and next generation polycrystalline Ni-based superalloyscitations
- 2018On the effect of Nb on the microstructure and properties of next generation polycrystalline powder metallurgy Ni-based superalloyscitations
- 2017cemffcitations
- 2017Comparison of apparent activation energies for densification of alumina powders by pulsed electric current sintering (spark plasma sintering) and conventional sintering-toward applications for transparent polycrystalline aluminacitations
- 2017cemff : A force field database for cementitious materials including validations, applications and opportunitiescitations
- 2017cemff: a force field database for cementitious materials including validations, applications and opportunitiescitations
- 2016Atomistic simulations of silicate species interaction with portlandite surfacescitations
- 2015The role of oxidation damage in fatigue crack initiation of an advanced Ni-based superalloycitations
- 2015How colloid-colloid interactions and hydrodynamic effects influence the percolation threshold: A simulation study in alumina suspensionscitations
- 2015Effect of prior oxidation on high cycle fatigue performance of RR1000 and role of oxidation in fatigue crack initiationcitations
- 2015Surface 3D micro free forms: multifunctional microstructured mesoporous α-alumina by in situ slip casting using excimer laser ablated polycarbonate moldscitations
- 2011BARIUM TITANATE PROPERTIES ENHANCED BY ATTRITION MILLING
- 2011INFLUENCE OF ATTRITION MILLING ON BARIUM TITANATE PROPERTIES
- 2008Characterization of Barium Titanate powders Prepared by polymeric Precursors Method
- 2008Influence of lanthanum doping on properties of BaTiO3 prepared from organometallic complex
- 2007Improved superplasticisers for high performance concrete: the SUPERPLAST project
- 2007Impact of small amounts of swelling clays on the physical properties of debris-flow-like granular materials. Implications for the study of alpine debris flowcitations
Places of action
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article
Mesoscopic quantitative chemical analyses using STEM-EDX in current and next generation polycrystalline Ni-based superalloys
Abstract
Quantitative chemical analyses of Ni3Al based hardening precipitates (γ′) in polycrystalline Ni based superalloys have been conducted using energy dispersive X-ray spectroscopy (EDX), coupled with a scanning transmission electron microscope (STEM). The aim of the current investigation is (1) to evaluate the accuracy of calibration (k factor determinations and absorption corrections using a combination of differential X-ray absorption (DXA) and convergent beam electron diffraction (CBED)) by comparing with thermodynamic calculations and (2) to demonstrate the importance of the EDX chemical analysis by taking advantage of its unique capabilities to analyse sub-micron scale chemistries within a mesoscopic field of view under STEM. Our experimental findings show good agreement with the mole fraction ratio of γ′ to the disordered γ matrix predicted using the Lever rule on a thermodynamically stabilised unimodal superalloy, RR1000. The significance of analysing a statistically viable number of samples in thermodynamically metastable superalloys and the chemical fluctuations found in coarse γ′, sized above 200 nm on a scale of a few hundred nanometres in the context of solving a complex morphological evolution of γ′ particles is demonstrated.