|About this Abstract
||Materials Science & Technology 2012
||Multifunctional Materials for Aerospace and Defense: Challenges and Prospects
||Effect of Low Temperature Ageing before Cryorolling on Strengthening Behavior of Al 6061 Alloy
||Jayaganthan R, Palukuri Nageswara rao
|On-Site Speaker (Planned)
With the aim to understand the role of precipitates on mechanical properties and grain refinement during cryorolling of Al alloys, in the present work, Al 6061 alloy is solution treated, quenched at room temperature and artificially aged at low temperature (100 °C) for 5 hrs, 10 hrs and 70 hrs before cryorolling up to 90% reduction. These samples were further aged at low temperature (120 °C). After cryorolling, microstructural evolution of each sample was characterized by EBSD and TEM, mechanical properties are evaluated at room temperature by means of Vickers hardness testing and tensile testing. Before and after cryorolling, DSC was performed to understand the evolution of precipitates. It was observed through microstructural analysis that precipitates play a major role in determining strength and ductility. Cryorolling of solution treated and 10 hours aged Al 6061 alloy has shown optimum strength (420 MPa) and ductility (11%) with subsequent ageing process.