Deformation behavior of aluminum alloy matrix composites reinforced with few-layer graphene

Deformation behavior of aluminum alloy matrix composites reinforced with few-layer graphene

Microstructure and mechanical properties of aluminum alloy 2024 (Al2024)/few-layer graphene (FLG) composites produced by ball milling and hot rolling have been investigated. The presence of dispersed FLGs with high specific surface area significantly increases the strength of the composites. The com...

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Veröffentlicht in:Composites. Part A, Applied science and manufacturing Applied science and manufacturing, 2015-11, Vol.78, p.42-47
Hauptverfasser: Shin, S.E., Bae, D.H.
Format: Artikel
Sprache:eng
Schlagworte:
A. Metal matrix composites (MMCs)
Aluminum base alloys
B. Mechanical properties
B. Microstructures
Ball milling
Dislocations
E. Powder processing
Elongation
Graphene
Mechanical properties
Plastic deformation
Tensile strength
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Zusammenfassung:Microstructure and mechanical properties of aluminum alloy 2024 (Al2024)/few-layer graphene (FLG) composites produced by ball milling and hot rolling have been investigated. The presence of dispersed FLGs with high specific surface area significantly increases the strength of the composites. The composite containing 0.7vol.% FLGs exhibits tensile strength of 700MPa, two times higher than that of monolithic Al2024, and around 4% elongation to failure. During plastic deformation, restricted dislocation activities and the accumulated dislocation at between FLGs may contribute to strengthening of Al2024/FLG composites.
ISSN:1359-835X
1878-5840
DOI:10.1016/j.compositesa.2015.08.001