Microstructural Characteristics of Electron Beam Processed Al-2Sc

Dacian Tomus; Ma Qian; Peng Yu; Craig A. Brice; Colleen J. Bettles; Barry C. Muddle

doi:10.4028/www.scientific.net/MSF.654-656.910

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HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Microstructural Characteristics of Electron Beam...

Microstructural Characteristics of Electron Beam Processed Al-2Sc

Abstract:

Plate samples of Al-2Sc were processed with an electron beam (EB) gun in a vacuum of 10-3 Pa at 50kV and 30 µA. EB processing suppressed the formation of primary Al3Sc, altered the morphology of the eutectic (Al)-Al3Sc, and increased the solubility of Sc in the eutectic (Al). In addition, its cyclic heating effect induced the precipitation of Al3Sc. EB processing resulted in more profound hardening than conventional high temperature solid solution and ageing.