| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Light Metal and Composites Technology
|
| Presentation Title |
Microstructure and Interfaces of Nanocomposites Manufactured in Solid State |
| Author(s) |
Ramasis Goswami |
| On-Site Speaker (Planned) |
Ramasis Goswami |
| Abstract Scope |
Al2O3 and B4C are the armor grade ceramic materials with considerably high compressive strength and Hugoniot elastic limit (HEA). Studies indicate a few percent total weight reduction can lead to a several percent increase in mobility and survivability. Considerable efforts have been made to manufacture metal matrix composites (MMCs) to enhance the mechanical properties by adding various volume fractions of B4C or SiC powder to achieve higher homogeneity of ceramic particles in the matrix. Here we present the recent development of Al/B4C and Cu/Al2O3 MMCs processed in the solid state. In all cases, the composites show higher hardness as compared to the base metals and alloys. We investigate the microstructure and interfacial characteristics of the composites processed at relatively high pressure using x-ray diffraction (XRD) and transmission electron microscopy (TEM), and demonstrate that the formation of interfacial phase during sintering improves interface cohesion and mechanical properties significantly. |