Development and Properties of Cast TiAl Matrix In Situ Composites Reinforced with Carbide Particles
| Autor: | A. Klimová, Juraj Lapin, Kateryna Kamyshnykova, Michaela Štamborská, T. Pelachová |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
In situ Materials science Mechanical Engineering Intermetallic 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Carbide Matrix (mathematics) Mechanics of Materials 0103 physical sciences General Materials Science Composite material 0210 nano-technology |
| Zdroj: | Materials Science Forum. 941:1907-1913 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.941.1907 |
| Popis: | TheIn Situcomposites with microstructurally different types of intermetallic matrix such as nearly γ (TiAl) (composite A), multiphase with high amount of lamellar α2(Ti3Al) + γ (TiAl) regions (composite B) and fully lamellar α2+ γ (composite C) were prepared by centrifugal casting and consecutive heat treatments of Ti-44.5Al-8Nb-0.8Mo-3.6C-0.1B, Ti-37Al-7Nb-0.8Mo-5.9C-0.1B and Ti-46.4Al-5Nb-1C-0.2B (at.%) alloys, respectively. The centrifugal casting results in a uniform distribution of coarse primary carbide particles in the as-cast samples. Hot isostatic pressing (HIP) and heat treatments have no effect on the Vickers hardness of the in-situ composite B but lead to a significant softening of the in-situ composites A and C. The in-situ composite C with a coarse-grained fully lamellar matrix shows a higher flow stress at 1000 °C and improved creep resistance at 800 °C compared to those of the in-situ composites A and B. |
| Databáze: | OpenAIRE |
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