Enhanced mechanical properties of Mg–Al–Zn cast alloy via friction stir processing

Mg–Al–Zn casting was subjected to friction stir processing (FSP) and subsequent aging. FSP resulted in significant breakup and dissolution of the coarse, network-like eutectic β-Mg 17Al 12 phase distributed at the grain boundaries and remarkable grain refinement, thereby improving significantly the...

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Bibliographic Details
Published in:Scripta materialia 2007-03, Vol.56 (5), p.397-400
Main Authors: Feng, A.H., Ma, Z.Y.
Format: Article
Language:English
Subjects:
Breakup
Elongation
Eutectics
Friction stir processing
Friction stir welding
Grain boundaries
Grain refinement
Magnesium
Magnesium alloy
Mechanical properties
Microstructural modification
Property
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Summary:Mg–Al–Zn casting was subjected to friction stir processing (FSP) and subsequent aging. FSP resulted in significant breakup and dissolution of the coarse, network-like eutectic β-Mg 17Al 12 phase distributed at the grain boundaries and remarkable grain refinement, thereby improving significantly the tensile properties of the casting. The FSP Mg–Al–Zn sample exhibited an ultimate tensile strength of 337 MPa and an elongation of 10%. FSP combined with aging is a simple and effective approach to enhance the mechanical properties of Mg–Al–Zn casting.
ISSN:1359-6462
0956-716X
1872-8456
DOI:10.1016/j.scriptamat.2006.10.035