Oxidation and creep behavior of textured Ti2AlC and Ti3AlC2 |
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| Affiliation: | 1. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research (IEK), Microstructure and Properties of Materials (IEK-2), 52425 Jülich, Germany;2. Institute of Metal Research, Chinese Academy of Sciences, 110016 Shenyang, China;3. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research (IEK), Materials Synthesis and Processing (IEK-1), 52425 Jülich, Germany;4. Center for Adaptive System Engineering, School of Creativity and Art, ShanghaiTech University, 201210 Shanghai, China;5. Chair of Energy Engineering Materials, RWTH Aachen University, 52056 Aachen, Germany;1. AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Al. Mickiewicza 30, 30-059 Kraków, Poland;2. AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Kraków, Poland;1. Institut PPRIME, CNRS/Université de Poitiers/ENSMA, UPR 3346, Boulevard M. et P. Curie, TSA 41123, 86073, Poitiers Cedex 9, France;2. Safran Tech, 1 rue Geneviève Aubé, CS 80112, 78772, Magny les hameaux Cedex, France;3. Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-Université de Bourgogne Franche-Comté, 9 Av. Alain Savary, BP 47870, 21078, Dijon Cedex, France;1. Institut PPRIME, CNRS/Université de Poitiers/ENSMA, UPR 3346, TSA 41126, 86073, Poitiers Cedex 9, France;2. Université de Bordeaux, CNRS, Laboratoire des Composites ThermoStructuraux, UMR 5801, 33600, Pessac, France;3. Chair of Ceramics, Institute of Mineral Engineering (GHI), RWTH Aachen University, Forckenbeckstrasse 33, 52074, Aachen, Germany;4. Université Grenoble-Alpes, CNRS, Grenoble INP, LMGP, 38000, Grenoble, France;1. School of Materials Science and Engineering, Hefei University of Technology, Hefei, Anhui 230009, PR China;2. Instrumental Analysis Center, Hefei University of Technology, Hefei, Anhui 230009, PR China;1. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, 52425, Jülich, Germany;2. Chair of Energy Engineering Materials, RWTH Aachen University, 52056, Aachen, Germany;1. Institute of Energy and Climate Research, Microstructure and Properties of Materials (IEK-2), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany;2. Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany;3. Chair of Ceramics, Institute of Mineral Engineering, RWTH Aachen University, 52074, Aachen, Germany;4. Chair of Energy Engineering Materials, RWTH Aachen University, 52056, Aachen, Germany |
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| Abstract: | The oxidation and creep behaviors of textured Ti2AlC and Ti3AlC2 ceramics were characterized. The oxidation behavior of the two materials, which was studied in air at temperatures ranging from1000 to 1300 °C, was observed to be anisotropic and the materials exhibited a better oxidation resistance along a direction transverse to the c-axis. The correlation between the overall parabolic rate constant and oxidation temperature of both textured materials was characterized, providing new insights into the oxidation kinetics. The results indicate that the texturing has a negligible influence on the creep behavior in the assessed temperature range of 1000?1200 °C in air, for the applied stresses ranging from 40 to 80 MPa. In this stress regime, the creep behavior of textured Ti2AlC and Ti3AlC2 appears to be controlled by grain boundary sliding. This behavior can be rationalized based on a model for superplastic deformation, indicating pure-shear motion under stationary conditions accommodated by lattice or grain-boundary diffusion. |
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| Keywords: | Texture Oxidation Creep |
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