Frank partial dislocation in Ti2AlC-MAX phase induced by matrix-Cu diffusion
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| Title: | Frank partial dislocation in Ti2AlC-MAX phase induced by matrix-Cu diffusion |
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| Authors: | Yu, Wenbo, Guénolé, Julien, Ghanbaja, Jaafar, Vallet, Maxime, Guitton, Antoine |
| Contributors: | GUITTON, Antoine, Guénolé, Julien |
| Source: | Scripta Materialia. 191:34-39 |
| Publisher Information: | Elsevier BV, 2021. |
| Publication Year: | 2021 |
| Subject Terms: | EELS, [SPI] Engineering Sciences [physics], diffusion, Ti2AlC, 02 engineering and technology, High-Resolution TEM, [SPI.MAT] Engineering Sciences [physics]/Materials, 01 natural sciences, 0103 physical sciences, [SPI.MECA.MSMECA] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Materials and structures in mechanics [physics.class-ph], MAX phase, composite, 0210 nano-technology, Cu, atomistic simulations, [PHYS.COND] Physics [physics]/Condensed Matter [cond-mat] |
| Description: | The control of complex nanostructures is one of the most promising strategy for designing tailored property materials. Ti2AlC, as nanolayered ternary materials combining both ceramics and metals properties, could efficiently reinforce metal matrix composite by its decomposition into nano-Ti2C particles. However, the comprehensive description of the diffusion mechanisms of Cu element into Ti2AlC during its decomposition has not yet been revealed. Herein, we report detailed characterizations of Cu and Ti2AlC interlayers by means of high-resolution electron microscopy and atomic-scale simulations. In particular, we report the formation of Ti2AlxCuyC solid solutions. Furthermore, we demonstrate the formation of Ti2C platelets and evidenced Frank partial dislocations that are not expected to be found in such material. Impacts of such defects are discussed in the framework of mechanical behavior. |
| Document Type: | Article Conference object |
| File Description: | application/pdf |
| Language: | English |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2020.09.007 |
| Access URL: | https://hal.archives-ouvertes.fr/hal-02940841/document https://hal.univ-lorraine.fr/hal-03102054 https://hal.archives-ouvertes.fr/hal-02940841 https://www.sciencedirect.com/science/article/pii/S1359646220305960 https://hal.archives-ouvertes.fr/hal-02940841/document https://hal.univ-lorraine.fr/hal-03102054v1 https://hal.science/hal-02940841v1/document https://doi.org/10.1016/j.scriptamat.2020.09.007 https://hal.science/hal-02940841v1 |
| Rights: | Elsevier TDM |
| Accession Number: | edsair.doi.dedup.....c7ee04fabf424c4f13b647e72697bf2c |
| Database: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstract: | The control of complex nanostructures is one of the most promising strategy for designing tailored property materials. Ti2AlC, as nanolayered ternary materials combining both ceramics and metals properties, could efficiently reinforce metal matrix composite by its decomposition into nano-Ti2C particles. However, the comprehensive description of the diffusion mechanisms of Cu element into Ti2AlC during its decomposition has not yet been revealed. Herein, we report detailed characterizations of Cu and Ti2AlC interlayers by means of high-resolution electron microscopy and atomic-scale simulations. In particular, we report the formation of Ti2AlxCuyC solid solutions. Furthermore, we demonstrate the formation of Ti2C platelets and evidenced Frank partial dislocations that are not expected to be found in such material. Impacts of such defects are discussed in the framework of mechanical behavior. |
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| ISSN: | 13596462 |
| DOI: | 10.1016/j.scriptamat.2020.09.007 |