Electron beam surface melting of model 1200 Al alloys

Journal article

Electron beam surface melting has been used to characterise the phase content formed in a number of model 1200 series Al alloys with increasing solidification velocity in the range 2-50 mm s-1, typical of that experienced during continuous strip casting. Phases were extracted from the Al matrix and analysed by X-ray diffraction. A qualitative solidification microstructure selection map has been produced, showing that, for a given Fe content of 0.55 wt. %: With increasing solidification velocity the metastable aluminides FeAl6 and FeAlm displace equilibrium Fe4Al13 at Si contents <~0.15 wt.%, and that α-AlFeSi displaces these Fe aluminides at Si contents >0.15 wt.%, and that α-AlFeSi is an equilibrium phase at a Si content ≥0.50 wt.%. © 2001 Elsevier Science B.V. All rights reserved.

Authors: Allen, C; Kumar, S; Carroll, L; O'Reilly, K; Cama, H

• Publication status: Published
• Journal: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
• Volume: 304
• Issue: 1-2
• Pages: 604-607
• Publication date: 2001-05-31
• DOI: 10.1016/S0921-5093(00)01543-4
• ISSN: 0921-5093
• Language: English
• Keywords: phase selection; 1xxx Al alloys; electron beam surface melting