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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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Kappacher, Johann
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Publications (4/4 displayed)
- 2021Controlling the high temperature deformation behavior and thermal stability of ultra-fine-grained W by re alloyingcitations
- 2021How grain boundary characteristics influence plasticity close to and above the critical temperature of ultra-fine grained bcc Ta2.5Wcitations
- 2020Thermally activated deformation mechanisms and solid solution softening in W-Re alloys investigated via high temperature nanoindentationcitations
- 2019Beryllium – A challenge for preparation and mechanical characterization
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article
Thermally activated deformation mechanisms and solid solution softening in W-Re alloys investigated via high temperature nanoindentation
Abstract
<p>Thermally activated deformation mechanisms in three different W-Re alloys were investigated by performing high temperature nanoindentation experiments up to 800 °C. With increasing Re content the athermal hardness increases, while the temperature-dependent thermal contribution is strongly decreased. This results in a reduced strain rate sensitivity for W-Re alloys compared to pure W. The origin of this effect is a reduction of the Peierls potential due to Re, manifesting in an increased activation volume at lower temperatures. This gives rise to a solid solution softening effect, while at high-temperature application the mechanical behavior is governed by dislocation-dislocation interaction and solution strengthening.</p>