Crystallization of Droplets in Pure Al and Al-Cu Alloy
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- Takada Yukinobu
- Graduate Student, Hokkaido University
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- Kudoh Masayuki
- Division of Materials Science and Engineering, Hokkaido University
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- Noguchi Tohru
- Division of Mechanical Science, Hokkaido University
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Abstract
The fabrication techniques using a droplet, which is formed at the nozzle tip of an injector-like crucible by pushing a melt from the crucible and a piston rod, is called “the suspended droplet method”. The changes of grain size, dendritic morphology and macrosegregation which dependent on the droplet size are investigated in high- and low-purity aluminum and Al–0.5 mass%Cu alloy. A single crystal might be formed in the high-purity Al when the droplet size becomes as small as 1 mm in diameter. As the purity of Al decreases, polycrystals are formed even though the droplet size decreases. The sample of Al–0.5 mass%Cu alloy shows coarse dendrites, which gradually degenerate as the droplet size decreases. Additionally, the profile of the Cu concentration becomes uniform as the droplet size decreases.
Journal
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 42 (2), 215-219, 2001
The Japan Institute of Metals and Materials
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Keywords
Details 詳細情報について
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- CRID
- 1390001204246547200
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- NII Article ID
- 10006546803
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- NII Book ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BD3MXis1ehtrY%3D
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- ISSN
- 13475320
- 13459678
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- NDL BIB ID
- 5718873
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed