Microstructure and oxidation behavior of Co–Cr–Ta ternary alloys
| hal.structure.identifier | Department of Nanoscience and Nanoengineering | |
| hal.structure.identifier | Research Center for Structural Materials | |
| dc.contributor.author | LOUIS ETIENNE, Moreau | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GORSSE, Stéphane | |
| hal.structure.identifier | Research Center for Structural Materials | |
| dc.contributor.author | LAMBARD, Guillaume | |
| hal.structure.identifier | Research Center for Structural Materials | |
| hal.structure.identifier | Department of Nanoscience and Nanoengineering | |
| dc.contributor.author | HIDEYUKI, Murakami | |
| dc.date.issued | 2023-03 | |
| dc.identifier.issn | 0925-8388 | |
| dc.description.abstractEn | The improvement of oxidation resistance of alloys is one of the key points to develop components for ultra-high temperature applications. The formation of a CrTaO4 oxide layer has attracted attention because of its thermal stability and good protection against oxidation above 1000 °C where more commonly used protective oxide layers such as Cr2O3 show their limits. This study investigates the microstructure evolution and oxidation resistance of the Co-Cr-Ta ternary alloys in comparison to the Calphad predictions. The Co-Cr-Ta samples tested here are composed of an FCC Co-rich phase and a C15 laves phase, and an increase of Cr content was linked to the formation and growth of an additional σ phase. Thermogravimetric analysis, together with the isothermal oxidation tests in air at 1200 °C proved that alloys exhibited good oxidation resistance formed a continuous CrTaO4 layer. Also, optimization of Co-Cr-Ta composition with improved oxidation resistance was attempted using data-driven strategy and the results demonstrated the potential of such approach for the future of alloy design. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Characterization | |
| dc.subject.en | Phase diagrams | |
| dc.subject.en | Data-driven method | |
| dc.subject.en | CALPHAD method | |
| dc.subject.en | Oxidation | |
| dc.title.en | Microstructure and oxidation behavior of Co–Cr–Ta ternary alloys | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jallcom.2022.167968 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Alloys and Compounds | |
| bordeaux.page | 167968 | |
| bordeaux.volume | 936 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-04049513 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-04049513v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Alloys%20and%20Compounds&rft.date=2023-03&rft.volume=936&rft.spage=167968&rft.epage=167968&rft.eissn=0925-8388&rft.issn=0925-8388&rft.au=LOUIS%20ETIENNE,%20Moreau&GORSSE,%20St%C3%A9phane&LAMBARD,%20Guillaume&HIDEYUKI,%20Murakami&rft.genre=article |
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