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Al₈Mn₅ Particle Settling and Interactions with Oxide Films in Liquid AZ₉₁ Magnesium Alloys
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- Peng, L.
- Department of Materials, Imperial College London
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- Zeng, G.
- School of Materials Science and Engineering, Central South University
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- Su, T. C.
- Department of Materials, Imperial College London
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- Yasuda, H.
- Department of Materials Science and Engineering, Kyoto University
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- Nogita, K.
- School of Mechanical and Mining Engineering, The University of Queensland
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- Gourlay, C. M.
- Department of Materials, Imperial College London
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Description
Al₈Mn₅ particles form as primary solidification phases in Mg-Al-based alloys and are important for ensuring adequate corrosion resistance. However, excessive Al₈Mn₅ formation above the α-Mg liquidus temperature can lead to sludge formation, and the clustering of Al₈Mn₅ particles on oxide films can generate deleterious casting defects. Here, we use analytical SEM and real-time synchrotron x-ray radiography to study Al₈Mn₅ particle settling, the formation of a sludge layer, and the mechanism of Al₈Mn₅ clustering on oxides in AZ₉₁ containing two Fe levels. It is shown that settling Al₈Mn₅ can become trapped in entrained oxide and that new Al₈Mn₅ particles also seem to nucleate on oxide films. On cooling, these Al₈Mn₅ particles continue to grow, creating large Al₈Mn₅ clusters.
Journal
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- JOM
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JOM 71 2235-2244, 2019-07-15
Springer Science and Business Media LLC
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Keywords
- Technology
- PHASE
- Materials Science
- Materials Science, Multidisciplinary
- DRAG
- Solidification
- Mining & Mineral Processing
- 0912 Materials Engineering
- Materials
- Multidisciplinary
- Science & Technology
- 2500 Materials Science
- 0914 Resources Engineering and Extractive Metallurgy
- CORROSION
- Mineralogy
- Drag
- Corrosion
- 2200 Engineering
- SOLIDIFICATION
- Phase
- Physical Sciences
- Metallurgy & Metallurgical Engineering
- 0913 Mechanical Engineering
Details 詳細情報について
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- CRID
- 1050846638691261824
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- NII Article ID
- 120006796406
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- ISSN
- 10474838
- 15431851
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- HANDLE
- 10044/1/69873
- 2433/245690
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- IRDB
- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE
