|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Aluminum Alloys, Processing and Characterization
||The Influence of Low Temperature Clustering on Strengthening Precipitation in Al-Mg-Si Alloys
||Alex Poznak, Paul Sanders
|On-Site Speaker (Planned)
Heat-treatable 6000 series aluminum alloys are the most commonly extruded materials in the world. The precipitation process in these alloys is both complex and well characterized. The earliest clustering stage has been shown to have a large effect on subsequent strengthening precipitation, however little is known about the influence of clustering as a function of composition and processing parameters. The current work examines this influence considering the factors of relative and absolute magnesium and silicon content, extent of natural aging, and heat-treatment ramp rates. Billets were cast and extruded prior to heat-treatment, and the hardening response was evaluated with hardness and conductivity curves, differential scanning calorimetry (DSC), and electron microscopy. This work advances the current understanding of the Al-Mg-Si precipitation process by correlating composition and processing parameters to the kinetics of strengthening; it may be used to increase strength and toughness by optimizing these factors.
||Planned: Light Metals Volume