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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
The defect evolution in shock loaded tantalum single crystals
Abstract
The defect structures of three different orientation ([001], [011] and [111]) shocked single crystals of tantalum have been characterised using scanning electron microscopy and transmission electron microscopy. The defect evolution and the response of the single crystals are found to be highly dependent on the orientation of the single crystals and the position in the specimen. Crystal plasticity simulation has been used to calculate the strain tensor in the specimens as a function of position and time. The defect types and distributions are analysed in terms of the shock wave and the lateral and back release waves. Twins at the sample centre and front surface were created by the shock wave front. The twins at the back of the sample close to the side surface are produced by the interaction of the release waves. Twinning area fraction and dislocation density are higher at the impact surface region than at the back surface due to decay of the elastic precursor and the difference in loading duration. Twinning acts as a major deformation mechanism and has a strong influence on the Hugoniot elastic limit (HEL) and spall strength when the loading direction is [011] or [111].