In-situ synchrotron X-ray radiography observation of primary Al^sub 2^Cu intermetallic growth on fragments of aluminium oxide film

While using synchrotron X-ray radiography for studying ultrasonic melt processing, the growth of the primary Al2Cu interrnetallic phase on fragments of aluminium oxide film during solidification of a hyper-eutectic Al-35% Cu alloy was observed in-situ and in real time with adequate spatial and tempo...

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Published in:Materials letters 2018-02, Vol.213, p.303
Main Authors: Wang, Feng, Eskin, Dmitry, Connolley, Thomas, Wang, Chuangnan, Koe, Billy, King, Andrew, Reinhard, Christina, Mi, Jiawei
Format: Article
Language:English
Subjects:
Aluminum oxide
Copper base alloys
Fragmentation
Fragments
Intermetallic compounds
Materials science
Nucleation
Oxide coatings
Radiography
Solidification
Temporal resolution
X-ray radiography
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container_start_page 303
container_title Materials letters
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creator Wang, Feng
Eskin, Dmitry
Connolley, Thomas
Wang, Chuangnan
Koe, Billy
King, Andrew
Reinhard, Christina
Mi, Jiawei
description While using synchrotron X-ray radiography for studying ultrasonic melt processing, the growth of the primary Al2Cu interrnetallic phase on fragments of aluminium oxide film during solidification of a hyper-eutectic 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.
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source ScienceDirect Freedom Collection 2022-2024
subjects Aluminum oxide
Copper base alloys
Fragmentation
Fragments
Intermetallic compounds
Materials science
Nucleation
Oxide coatings
Radiography
Solidification
Temporal resolution
X-ray radiography
title In-situ synchrotron X-ray radiography observation of primary Al^sub 2^Cu intermetallic growth on fragments of aluminium oxide film
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