|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Nanocomposites V: Structure-Property Relationships in Nanostructured Materials
||Superplastic Behavior of Ultrafine Grained Aluminium Matrix Nano Composite
||Suman Deb, Sushanta Kumar Panigrahi, Matthias Weiss
|On-Site Speaker (Planned)
Ultrafine grained (UFG) materials show superplastic behavior due to grain boundary sliding at high temperature. But higher stored energy of UFG material makes them unstable at high temperature. Nano particles, reinforced into the UFG matrix, restrict the grain growth through grain boundary pinning and provide microstructural stability at high temperature. The present work focuses on development of UFG aluminium (Al) nano composite with 0.5 wt % SiC (~45 nm) through a newly proposed processing route. The composite possesses lower cell/sub-grain size and higher strength as compared to unreinforced UFG Al. To study the superplastic behavior, tensile test has been performed at different temperature and strain rate. Tensile test at elevated temperature provides the scope of superplastic elongation of UFG nano composites. The interference of the nano particles with the grain boundary sliding is the reason behind the lower superplasticity in composite as compared to unreinforced Al alloy.
||Planned: Supplemental Proceedings volume