| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Metal-Matrix Composites: Advances in Processing, Characterization, Performance and Analysis
|
| Presentation Title |
Characterization of Metal-matrix Composites Synthesized by Reactive Melt Penetration of SiO2-based Preforms in Molten Al-Ti and Al-Fe Alloys |
| Author(s) |
Constantin Virgil Solomon, Anthony Yurcho, Matthias Zeller, Timothy R Wagner |
| On-Site Speaker (Planned) |
Constantin Virgil Solomon |
| Abstract Scope |
Two different metal-matrix composites have been synthesized by reactive melt penetration of SiO2 and SiO2 + SiC preforms in Al-Fe and Al-Ti alloys. The morphology, chemical composition, and crystallography of the metallic and ceramic phases in the obtained parts have been investigated using analytical light and electron microscopy, X-ray spectroscopy, and X-ray diffraction. The fracture mechanism of the composite material subjected to dynamic impact testing was assessed using light and scanning electron microscopy. Following the reactive melt penetration process several binary and ternary ceramic and metallic phases have been identified in the composite materials: Al2O3, TiC, AlTi, AlFe, AlFeSi. Using electron diffraction two intermetallic phases were identified as Al13Fe4 (monoclinic C2/m) and Al4Fe1.7Si (hexagonal P63/mmc). The composite obtained from SiO2 + SiC preforms in Al-Ti alloys kept in atmosphere at room temperature shows continuous degradation of the mechanical integrity. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Characterization, Phase Transformations |