Amorphous layer formation in Al86.0Co7.6Ce6.4 glass-forming alloy by large-area electron beam irradiation
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 ar...
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Elsevier
2013
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| Online Access: | https://eprints.nottingham.ac.uk/3251/ |
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| author | Li, C.L. Murray, J.W. Voisey, K.T. Clare, A.T. McCartney, D.G. |
| author_facet | Li, C.L. Murray, J.W. Voisey, K.T. Clare, A.T. McCartney, D.G. |
| author_sort | Li, C.L. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T18:21:19Z |
| format | Article |
| id | nottingham-3251 |
| institution | University of Nottingham Malaysia Campus |
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| last_indexed | 2025-11-14T18:21:19Z |
| publishDate | 2013 |
| publisher | Elsevier |
| recordtype | eprints |
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| spelling | nottingham-32512020-05-04T20:20:33Z https://eprints.nottingham.ac.uk/3251/ 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 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. Elsevier 2013 Article PeerReviewed Li, C.L., Murray, J.W., Voisey, K.T., Clare, A.T. and McCartney, D.G. (2013) Amorphous layer formation in Al86.0Co7.6Ce6.4 glass-forming alloy by large-area electron beam irradiation. Applied Surface Science, 280 . pp. 431-438. ISSN 0169-4332 Al-Co-Ce alloy glass-forming amorphous layer electron beam irradiation http://www.sciencedirect.com/science/article/pii/S0169433213008945 doi:10.1016/j.apsusc.2013.05.005 doi:10.1016/j.apsusc.2013.05.005 |
| spellingShingle | Al-Co-Ce alloy glass-forming amorphous layer 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 |
| title | Amorphous layer formation in Al86.0Co7.6Ce6.4 glass-forming alloy by large-area electron beam irradiation |
| title_full | Amorphous layer formation in Al86.0Co7.6Ce6.4 glass-forming alloy by large-area electron beam irradiation |
| title_fullStr | Amorphous layer formation in Al86.0Co7.6Ce6.4 glass-forming alloy by large-area electron beam irradiation |
| title_full_unstemmed | Amorphous layer formation in Al86.0Co7.6Ce6.4 glass-forming alloy by large-area electron beam irradiation |
| title_short | Amorphous layer formation in Al86.0Co7.6Ce6.4 glass-forming alloy by large-area electron beam irradiation |
| title_sort | amorphous layer formation in al86.0co7.6ce6.4 glass-forming alloy by large-area electron beam irradiation |
| topic | Al-Co-Ce alloy glass-forming amorphous layer electron beam irradiation |
| url | https://eprints.nottingham.ac.uk/3251/ https://eprints.nottingham.ac.uk/3251/ https://eprints.nottingham.ac.uk/3251/ |