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| Auteurs principaux: | , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/2406.13070 |
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| _version_ | 1866914840134549504 |
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| author | Billard, Capucine Texier, Damien Rambaudon, Matthieu Teissedre, Jean-Christophe Bourhila, Noureddine Marquie, Dimitri Marcin, Lionel Singer, Hugo Maurel, Vincent |
| author_facet | Billard, Capucine Texier, Damien Rambaudon, Matthieu Teissedre, Jean-Christophe Bourhila, Noureddine Marquie, Dimitri Marcin, Lionel Singer, Hugo Maurel, Vincent |
| contents | The brittleness of an aluminide diffusion coating protecting a René 125 Ni-based polycrystalline superalloy was investigated over a wide range of temperatures in its as-received and thermally aged form. Isothermal and thermal cycled aging were performed on the coated system at a maximum temperature of 1100 °C. Microstructure evolutions and damage initiation within the coating were characterized. Interrupted tensile tests and thermomechanical fatigue tests were conducted to document critical stress-strain conditions leading to the coating cracking and lifetime for the case of thermo-mechanical fatigue loading. Advanced digital image correlation and acoustic emission techniques were used to detect coating cracking. Isothermal oxidation or cyclic oxidation led to improved strain-to-failure due to metallurgical evolutions and also longer fatigue life under thermomechanical fatigue conditions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_13070 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Influence of the coating brittleness on the thermomechanical fatigue behavior of a $β$-NiAl coated R125 Ni-based superalloy Billard, Capucine Texier, Damien Rambaudon, Matthieu Teissedre, Jean-Christophe Bourhila, Noureddine Marquie, Dimitri Marcin, Lionel Singer, Hugo Maurel, Vincent Materials Science Applied Physics The brittleness of an aluminide diffusion coating protecting a René 125 Ni-based polycrystalline superalloy was investigated over a wide range of temperatures in its as-received and thermally aged form. Isothermal and thermal cycled aging were performed on the coated system at a maximum temperature of 1100 °C. Microstructure evolutions and damage initiation within the coating were characterized. Interrupted tensile tests and thermomechanical fatigue tests were conducted to document critical stress-strain conditions leading to the coating cracking and lifetime for the case of thermo-mechanical fatigue loading. Advanced digital image correlation and acoustic emission techniques were used to detect coating cracking. Isothermal oxidation or cyclic oxidation led to improved strain-to-failure due to metallurgical evolutions and also longer fatigue life under thermomechanical fatigue conditions. |
| title | Influence of the coating brittleness on the thermomechanical fatigue behavior of a $β$-NiAl coated R125 Ni-based superalloy |
| topic | Materials Science Applied Physics |
| url | https://arxiv.org/abs/2406.13070 |