|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Ultrafine Grained Materials IX
||SPD of Binary Al-Mg Alloys Pre-processed by Continuous Screw Extrusion
||Kristian Grøtta Skorpen, Hans Jørgen Roven, Oddvin Reiso
|On-Site Speaker (Planned)
||Kristian Grøtta Skorpen
A novel process of screw-extrusion gives new opportunities for processing light metal alloys. The present work encompasses new results for aluminium alloys containing relatively high magnesium contents. In screw extrusion, granulated input material is continuously moved and consolidated before it enters the extrusion chamber and extrusion die. Thus, the amount of material as well as the extrusion speed can be controlled in order to avoid local overheating, hot tearing or cracking. Profiles of various binary Al-Mg alloys were produced by this process and further subjected to different heat treatments and severe plastic deformation methods. The effects of different Mg contents as well as differences in the thermo mechanical history prior to, and during SPD have been investigated. The microstructure and mechanical properties of the processed materials were characterized by conventional methods and advanced electron microscopy.