Oxidation behavior of fully dense TiAl-based composites with a controlled laminated microstructure
| Autor: | Guohua Fan, Tongtong Zhang, Xuewen Li, Jie Zhang, X. W. Yang, Chao Xu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Equiaxed crystals
Materials science Annealing (metallurgy) Composite number Oxide 02 engineering and technology Hot pressing 01 natural sciences Biomaterials chemistry.chemical_compound Layered structure 0103 physical sciences Lamellar structure Composite material 010302 applied physics Mining engineering. Metallurgy Isotropy Metals and Alloys Oxidation resistance TN1-997 021001 nanoscience & nanotechnology Microstructure Surfaces Coatings and Films chemistry Titanium aluminides Ceramics and Composites 0210 nano-technology Alloying |
| Zdroj: | Journal of Materials Research and Technology, Vol 14, Iss, Pp 262-268 (2021) |
| ISSN: | 2238-7854 |
| Popis: | A novel laminated TiAl matrix composite (LMC) consisting of alternating equiaxed grain layers (EGLs) and fully lamellar grain layers (FGLs) has been fabricated successfully by hot pressing of alternating Ti/Al–6Si foils and subsequent multi-step reaction annealing. The oxidation behavior of the LMC at 800 °C was studied. The results show that the oxide scale is formed with typical multilayer structure after oxidized at 800 °C for 100 h. The oxidation behavior is different between EGLs and FGLs while the thickness of oxide scale is almost identical, suggesting an isotropy oxidation resistance of the LMC. Si addition effectively enhances the oxidation resistance of the LMC. |
| Databáze: | OpenAIRE |
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