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In-situ study of morphology and growth of primary α-Al(FeMnCr)Si intermetallics in an Al-Si alloy
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- Bjurenstedt, Anton (author)
- Jönköping University,JTH, Material och tillverkning,JTH. Forskningsmiljö Material och tillverkning – Gjutning
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- Casari, Daniele (author)
- Department of Physics, Norwegian University of Science and Technology, Trondheim, Norway
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- Seifeddine, Salem (author)
- Jönköping University,JTH, Material och tillverkning,JTH. Forskningsmiljö Material och tillverkning – Gjutning
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- Elsevier, 2017
- 2017
- English.
- In: Acta Materialia. - : Elsevier. - 1359-6454 .- 1873-2453. ; 130, s. 1-9
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Morphology and growth of primary α-Al(FeMnCr)Si intermetallics have been studied in-situ during solidification of a commercial secondary aluminum alloy employing X-radiographic imaging combined with deep-etching. The α-Al(FeMnCr)Si intermetallics were found to nucleate primarily on surface oxides, and the continued growth yielded both rhombic dodecahedrons and elongated rod-like morphologies. Both morphologies were observed as hopper and massive types, where the hopper intermetallics had the higher growth rates. The growth rate, which determines the type, appears to be linked to nucleation frequency; higher nucleation frequency promoted massive types and lower nucleation frequency promoted hopper intermetallics.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Keyword
- Aluminum
- Casting
- Crystal growth
- Intermetallics
- Primary α-Al(FeMnCr)Si
- Aluminum alloys
- Hoppers
- Morphology
- Nucleation
- Silicon
- Silicon alloys
- Deep etching
- In-Situ Study
- Nucleation frequencies
- Rhombic dodecahedron
- Rod-like morphology
- Secondary aluminum
- Surface oxide
- X-radiographic imaging
Publication and Content Type
- ref (subject category)
- art (subject category)
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