About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Development in Light Weight Alloys and Composites
|
Presentation Title |
Enhancing the Strength of Al-B4C Composites |
Author(s) |
Ramasis Goswami |
On-Site Speaker (Planned) |
Ramasis Goswami |
Abstract Scope |
We report here significant enhancement of hardness of aluminum-B4C composites by Mg alloy addition, deformation and subsequent annealing at high-homologous temperatures of the matrix. In this case the deformation induced plastic yielding enables the incorporation and dispersion of hard particles in Al-matrix. Interfacial AlMgB4 and Al3BC phases were observed at B4C/matrix interfaces as revealed by the high-resolution transmission electron microscopy and x-ray diffractions. We demonstrate the Mg addition improves interfacial cohesion significantly between the matrix and ceramic particles, and primarily contributes to the enhancement of strength. This provides a new method of developing Al based high-strength composites. |