| About this Abstract |
| Meeting |
Materials Science & Technology 2019
|
| Symposium
|
Multifunctional Ceramic- and Metal-matrix Composites: Processing, Microstructure, Properties and Performance
|
| Presentation Title |
Comparison of In-situ Aluminum Metal Matrix Composite Processes |
| Author(s) |
Aaron T. Gladstein, Caleb Reese, Alan Taub |
| On-Site Speaker (Planned) |
Aaron T. Gladstein |
| Abstract Scope |
Metal matrix composites (MMCs) are used in the automotive and aerospace industries to decrease overall product weight while increasing component strength, wear resistance, and high temperature tensile properties. In-situ methods for creating MMCs offer better matrix-particle bonding, particle size distribution, and reduction in contamination as compared with ex-situ processes. This research focuses on the microstructural evolution, processing parameters, and strength enhancement for two separate in-situ methods of creating aluminum-based MMCs. Self-propagating high temperature synthesis (SHS) is compared with polymer-derived MMCs (PD-MMCs). For the SHS process, elemental powders are added directly into the aluminum melt and reacted at high temperatures to form ceramic nanoparticles. Similarly, PD-MMCs are created by pyrolyzing organic precursor polymers within the molten metal; the elements of the polymer chain are used to create ceramic particles. The particle size, morphology, and distribution are compared for the two processes. |