On microstructural refinement of an AA7449 aluminium alloy through shearing above liquidus temperature

Applying mechanical shearing by melt conditioner machine at above liquidus temperature was carried out. The experimental results show fine and uniform structure can be acquired across the sample. Further, shearing degasses the melt through cavitation effect. The achieved results indicate an alternat...

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Bibliographic Details
Published inMaterials letters Vol. 65; no. 21; pp. 3230 - 3233
Main Authors Haghayeghi, R., Nastac, L.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.11.2011
Subjects
A7749
Aluminum base alloys
Cavitation
Conditioning
Grain refinement
Liquidus
Melts
Microstructure
Refining
Shearing
Solidification
Grain refinement
A7749
Solidification
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Summary:Applying mechanical shearing by melt conditioner machine at above liquidus temperature was carried out. The experimental results show fine and uniform structure can be acquired across the sample. Further, shearing degasses the melt through cavitation effect. The achieved results indicate an alternative process for refining structures. ► Effects of liquid shearing on AA7449 aerospace alloy. ► Extensive grain refinement by the process. ► Improvement in degassing the melt. ► Fine and uniform structure across the sample was acquired.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2011.06.097