| 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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Sun, L.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2021Effect of texture and mechanical anisotropy on flow behaviour in Ti-6Al-4V alloy under superplastic forming conditionscitations
- 2021Unveiling Planar Defects in Hexagonal Group IV Materialscitations
- 2020Chlorides entrapment capability of various in-situ grown NiAl-LDHs: Structural and corrosion resistance propertiescitations
- 2018A novel ultra-high strength maraging steel with balanced ductility and creep resistance achieved by nanoscale β-NiAl and Laves phase precipitatescitations
- 2018The effect of thermomechanical controlled processing on recrystallisation and subsequent deformation-induced ferrite transformation textures in microalloyed steels
- 2017Precipitation in a novel maraging steel F1E:A study of austenitization and aging using small angle neutron scatteringcitations
- 2017A SANS and APT study of precipitate evolution and strengthening in a maraging steelcitations
- 2017A SANS and APT study of precipitate evolution and strengthening in a maraging steelcitations
- 2017Precipitation in a novel maraging steel F1Ecitations
- 2017Is iron unique in promoting electrical conductivity in MOFs?citations
- 2016Insights into microstructural interfaces in aerospace alloys characterised by atom probe tomographycitations
- 2012Aligned silk-based 3-D architectures for contact guidance in tissue engineeringcitations
- 2008Ion irradiation of carbon nanotubes encapsulating cobalt crystalscitations
- 2008Designing silk-based 3D architectures with controlled lamellar morphology
- 2007Crystallization and preliminary crystallographic analysis of an esterese with a novel domein from the hyperthermophile Thermotoga maritimacitations
- 2007Crystallization and preliminary crystallographic analysis of an esterese with a novel domein from the hyperthermophile Thermotoga maritimacitations
Places of action
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article
A novel ultra-high strength maraging steel with balanced ductility and creep resistance achieved by nanoscale β-NiAl and Laves phase precipitates
Abstract
A novel ultra-high strength precipitation hardened martensitic steel with balanced ductility and creep resistance has been developed. It utilises a unique combination of nanometre scale intermetallic precipitates of Laves phases and β-NiAl to achieve such properties. The mechanical properties of this steel were assessed by tensile and creep testing. With different heat treatments, this steel showed a remarkable combination of mechanical properties: yield strength of >1800 MPa, ultimate tensile strength of ∼2000 MPa, tensile ductility up to ∼8% at room temperature and creep rupture life >2000 h under 700 MPa stress at 500 °C. The microstructures at different length scales were characterised using scanning/transmission electron microscopy and atom probe tomography. The austenisation and ageing temperatures were found be the key factors determining the microstructural development and resulting mechanical properties. Large primary Laves phase precipitates formed at lower austenisation temperatures resulted in reduced creep strength; whilst the small difference (20 °C) in ageing temperatures had significant impact on the spatial distribution characteristics of β-NiAl precipitates. Lower ageing temperature produced much smaller but more uniformly distributed β-NiAl precipitates which contributed to the higher observed yield strength. It is clear from this study that whilst this novel alloy system showed great potentials, careful design of heat treatment is still required to achieve balanced mechanical properties to meet the service requirements in aerospace propulsion systems.