In-situ synchrotron X-ray radiography observation of primary Al2Cu intermetallic growth on fragments of aluminium oxide film

Wang, Feng; Eskin, Dmitry; Connolley, Thomas; Wang, Chuangnan; Koe, Billy; King, Andrew; Reinhard, Christina; Mi, Jiawei

Abstract

While using synchrotron X-ray radiography for studying ultrasonic melt processing, the growth of the primary Al2Cu intermetallic phase on fragments of aluminium oxide film during solidification of a hypereutectic Al-35% Cu alloy was observed in-situ and in real time with adequate spatial and temporal resolution. This provides the first direct evidence for the nucleation of a primary phase on oxide particles during solidification of real metallic alloys. Comparison of the primary Al2Cu intermetallics grown in the melt with and without fragments of aluminium oxide film reveals considerable refinement, which demonstrates that the enhanced nucleation of a primary phase on oxide particles promotes structure refinement.

Citation

Wang, F., Eskin, D., Connolley, T., Wang, C., Koe, B., King, A., …Mi, J. (2018). In-situ synchrotron X-ray radiography observation of primary Al2Cu intermetallic growth on fragments of aluminium oxide film. Materials letters, 213, 303-305. https://doi.org/10.1016/j.matlet.2017.11.090

• Journal Article Type: Article
• Acceptance Date: Nov 19, 2017
• Online Publication Date: Nov 21, 2017
• Publication Date: Feb 15, 2018
• Deposit Date: Mar 2, 2018
• Publicly Available Date: Mar 5, 2018
• Journal: Materials Letters
• Print ISSN: 0167-577X
• Electronic ISSN: 1873-4979
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 213
• Pages: 303-305
• DOI: https://doi.org/10.1016/j.matlet.2017.11.090
• Keywords: Mechanical Engineering; General Materials Science; Mechanics of Materials; Condensed Matter Physics
• Public URL: https://hull-repository.worktribe.com/output/700551
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0167577X17317159?via%3Dihub
• Additional Information: This article is maintained by: Elsevier; Article Title: In-situ synchrotron X-ray radiography observation of primary Al2Cu intermetallic growth on fragments of aluminium oxide film; Journal Title: Materials Letters; CrossRef DOI link to publisher maintained version: http://dx.doi.org/10.1016/j.matlet.2017.11.090; Content Type: article; Copyright: © 2017 The Authors. Published by Elsevier B.V.