About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Characterization of Minerals, Metals and Materials 2022
|
Presentation Title |
Microstructural Characterisation of AA5083 in AA5083/SiC Co-continuous Ceramic Composites (C4) Fabricated by Gravity and Gas Pressure Infiltration |
Author(s) |
Georgia Warren, Jianshen Wang, AS Prasanth, Krishna Shankar, V Krishnaraj, R Ramesh, Juan P. Escobedo-Diaz |
On-Site Speaker (Planned) |
Juan P. Escobedo-Diaz |
Abstract Scope |
AA5083/SiC co-continuous ceramic composites (C4) were fabricated using gas pressure and gravity infiltration. SiC foams had 10 pores per inch (PPI) and 20 PPI. The aluminum metal matrix in C4 composites were characterized using optical microscopy and a microhardness measurements. Results show that the properties of the aluminium matrix in the composites were affected by the infiltration pressure during manufacturing and the pore size of SiC foams. The Al phase in specimens fabricated by gas pressure infiltration exhibited a smaller average grain size, a higher average hardness, and lower average porosity level compared to that fabricated by gravity infiltration. Also the specimens manufactured with 10 PPI foams displayed a larger average grain size, a higher average hardness and higher porosity level compared to the composites with 20 PPI foams. The hardness in the Al matrix was observed to increase with decreasing distance from the SiC struts. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, Composites |