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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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Lu, Kaiju
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2023Cooperative deformation mechanisms in a fatigued CoCrNi multi-principal element alloy: A case of low stacking fault energycitations
- 2023Elemental segregation in CoCrFeMnNi high entropy alloy after intermediate-temperature low cycle fatigue loadingcitations
- 2022Effective and back stresses evolution upon cycling a high-entropy alloycitations
- 2022Temperature-dependent cyclic deformation behavior of CoCrFeMnNi high-entropy alloy
- 2022Low-cycle fatigue behavior and deformation mechanisms of a dual-phase Al$_{0.5}$CoCrFeMnNi high-entropy alloy
- 2022Low-cycle fatigue deformation and damage behavior of equiatomic CoCrFeMnNi and CoCrNi alloys
- 2021Micro-mechanical deformation behavior of CoCrFeMnNi high-entropy alloycitations
- 2021Superior low-cycle fatigue properties of CoCrNi compared to CoCrFeMnNicitations
- 2021Deformation mechanisms of CoCrFeMnNi high-entropy alloy under low-cycle-fatigue loadingcitations
- 2020High-temperature low cycle fatigue behavior of an equiatomic CoCrFeMnNi high-entropy alloycitations
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article
Effective and back stresses evolution upon cycling a high-entropy alloy
Abstract
We report on the effective and back stresses evolution of a CoCrFeMnNi high-entropy alloy (HEA) by partitioning its cyclic hysteresis loops. It was found that the cyclic stress response of the HEA predominantly originates from the back stress evolution. Back stress also increases significantly with increasing strain amplitude and reducing grain size. However, the change of effective stress is rather insignificant with altering cycle number, strain amplitude and grain size. This indicates that the effective stress is determined mainly by the lattice friction. Further comparisons to an austenitic steel and a medium-entropy alloy identified the origins of their peculiar cyclic strength.The effective stress and back stress upon cycling a HEA are assessed, both of which are higher than a conventional FCC steel, contributing to the HEA’s higher cyclic strength.