Skip to main content

Research Repository

Advanced Search

Amorphous layer formation in Al86.0Co7.6Ce6.4 glass-forming alloy by large-area electron beam irradiation

Li, C.L.; Murray, J.W.; Voisey, K.T.; Clare, A.T.; McCartney, D.G.

Amorphous layer formation in Al86.0Co7.6Ce6.4 glass-forming alloy by large-area electron beam irradiation Thumbnail


C.L. Li

J.W. Murray

Associate Professor

Professor of Manufacturing Engineering

D.G. McCartney


Amorphous Al-Co-Ce alloys are of interest because of their resistance to corrosion, but high cooling rates are generally required to suppress the formation of crystalline phases. In this study, the surface of a bulk crystalline Al-Co-Ce alloy of a glass-forming composition was treated using large area electron beam (LAEB) irradiation. Scanning electron microscopy shows that, compared to the microstructure of the original crystalline material, the treated surface exhibits greatly improved microstructural and compositional uniformity. Glancing angle X-ray diffraction conducted on the surface of treated samples indicates the formation of the amorphous phase following 25 and 50 pulses at 35 kV cathode voltage. However, when the samples are treated with 100 and 150 pulses at 35 kV cathode voltage of electron beam irradiation, the treated layer comprises localised crystalline regions in an amorphous matrix. In addition, the formation of cracks in the treated layer is found to be localised around the Al8Co2Ce phase in the bulk material. Overall, crack length per unit area had no clear change with an increase in the number of pulses.

Journal Article Type Article
Publication Date Jan 1, 2013
Deposit Date Jul 23, 2014
Publicly Available Date Jul 23, 2014
Journal Applied Surface Science
Print ISSN 0169-4332
Electronic ISSN 0169-4332
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 280
Keywords Al-Co-Ce alloy, glass-forming, amorphous layer, electron beam irradiation
Public URL
Publisher URL
Additional Information NOTICE: this is the author’s version of a work that was accepted for publication in Applied Surface Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Applied Surface Science, 280, (2013), doi: 10.1016/j.apsusc.2013.05.005


You might also like

Downloadable Citations