| 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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Hofmann, Michael
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2024Analysis of Phase-Specific Strain Pole Figures for Duplex Steels under Elasto-Plastic Uniaxial Tension—Experiment vs. EPSC Modellingcitations
- 2024In-situ synchrotron diffraction analysis of deformation mechanisms in an AA5083 sheet metal processed by modified equal-channel angular pressing
- 2023Kinetics of Martensite Decomposition and Microstructure Stability of Ti-6246 during Rapid Heating to Service Temperaturescitations
- 2023Determination of diffraction and single-crystal elastic constants of laser powder bed fused Inconel 718citations
- 2022In-situ analysis of the elastic-plastic characteristics of high strength dual-phase steelcitations
- 2022In-situ analysis of the thermoelastic effect and its relation to the onset of yielding of low carbon steelcitations
- 2021Elasto-Plastic Deformation of Heterogeneous Metallic Materials: An Experimental Approach with AlMg4Si10citations
- 2021Scanning manufacturing parameters determining the residual stress state in LPBF IN718 small partscitations
- 2021TaC Precipitation Kinetics During Cooling of Co−Re‐Based Alloyscitations
- 2021Deformation Mechanisms in Ni-Based Superalloys at Room and Elevated Temperatures Studied by In Situ Neutron Diffraction and Electron Microscopycitations
- 2020Separation of the Formation Mechanisms of Residual Stresses in LPBF 316Lcitations
- 2019Carbon Redistribution Process in Austempered Ductile Iron (ADI) During Heat Treatment—APT and Synchrotron Diffraction Studycitations
- 2018Creep deformation of Co-Re-Ta-C alloys with varying C content – investigated in-situ by simultaneous synchrotron radiation diffractioncitations
- 2017Comparison of submerged arc welding process modification influence on thermal strain by in-situ neutron diffractioncitations
- 2017Quantification of Residual Stresses in Electron Beam Welded Fracture Mechanics Specimens
- 2016Stability of TaC precipitates in a Co–Re-based alloy being developed for ultra-high-temperature applicationscitations
- 2016Microstructure and Residual Stress in Rotary Friction Welded Dissimilar Metals of AA7020 Aluminium Alloy with 316L Steelcitations
- 2015A comparative study of additive manufacturing techniques: Residual stress and microstructural analysis of CLAD and WAAM printed Ti-6Al-4V componentscitations
- 2014Microsopic Simulation of Thermally‐Induced 2nd Order Eigenstresses in AlSi‐Alloys
- 2014Neutron and synchrotron probes in the development of Co–Re-based alloys for next generation gas turbines with an emphasis on the influence of boron additivescitations
- 2014Microstresses and crack formation in AlSi7MgCu and AlSi17Cu4 alloys for engine componentscitations
- 2013In-situ measurement of phase transformation kinetics in austempered ductile ironcitations
- 2013Application of In Situ Neutron and X-Ray Measurements at High Temperatures in the Development of Co-Re-Based Alloys for Gas Turbinescitations
- 2011Large white organic light-emitting diode lighting panel on metal foilscitations
- 2008Microwave and d.c. conductivity of alpha--ET2I3 and beta-sub(t)-ET2I3 microcrystals in polymer films
Places of action
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article
Stability of TaC precipitates in a Co–Re-based alloy being developed for ultra-high-temperature applications
Abstract
Co–Re alloys are being developed for ultra-high-temperature applications to supplement Ni-based superalloys in future gas turbines. The main goal of the alloy development is to increase the maximum service temperature of the alloy beyond 1473 K, i.e. at least 100 K more than the present single-crystal Ni-based superalloy turbine blades. Co–Re alloys are strengthened by carbide phases, particularly the monocarbide of Ta. The binary TaC phase is stable at very high temperatures, much greater than the melting temperature of superalloys and Co–Re alloys. However, its stability within the Co–Re–Cr system has never been studied systematically. In this study an alloy with the composition Co–17Re–23Cr–1.2Ta–2.6C was investigated using complementary methods of small-angle neutron scattering (SANS), scanning electron microscopy, X-ray diffraction and neutron diffraction. Samples heat treated externally and samples heated in situ during diffraction experiments exhibited stable TaC precipitates at temperatures up to 1573 K. The size and volume fraction of fine TaC precipitates (up to 100 nm) were characterized at high temperatures with in situ SANS measurements. Moreover, SANS was used to monitor precipitate formation during cooling from high temperatures. When the alloy is heated the matrix undergoes an allotropic phase transformation from the ∊ phase (hexagonal close-packed) to the γ phase (face-centred cubic), and the influence on the strengthening TaC precipitates was also studied with in situ SANS. The results show that the TaC phase is stable and at these high temperatures the precipitates coarsen but still remain. This makes the TaC precipitates attractive and the Co–Re alloys a promising candidate for high-temperature application.