|About this Abstract
||2011 TMS Annual Meeting & Exhibition
||Aluminum Alloys: Fabrication, Characterization and Applications
||Solidification Characteristics of Aluminium Alloys under Electron Beam Fabrication Conditions
||Ma Qian, Dacian Tomus
|On-Site Speaker (Planned)
Wire-based electron beam direct manufacturing (EBDM) is a novel layer additive near-net shape metal fabrication technique. The process can be advantageous for aluminium alloys if new compositions can be created that leverage the near rapid solidification conditions inherent to the process. As most structural aluminium alloys utilize some form of precipitation strengthening, to capitalise on the EBDM attributes, it is important to understand the as-solidified microstructural characteristics under electron beam fabrication conditions. This paper describes the results of an investigation of the microstructures of electron beam processed AA 2219 and AA 6061 alloys and binary Al-Sc and Al-Ti alloys. Electron beam processing led to unique microstructural features in each alloy. The experimental observations are compared with Thermo-Calc predictions for metastable solidification. It will be demonstrated that electron beam processing offers promising alloy design opportunities for advanced aluminium alloy development.
||Planned: A print-only volume