Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 698, Issue -, Pages 282-288Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2017.05.068
Keywords
Composite; Spark plasma sintering; Hot rolling; Microstructure; Mechanical properties
Categories
Funding
- National Natural Science Foundation of China [51531009]
- Open Foundation of Key Laboratory of Advanced Materials of Yunnan Province [738010094]
- Hunan Provincial Innovation Foundation for Postgraduate [150140012]
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In this study, flat products of carbon nanotubes (CNTs) reinforced pure aluminum (Al) composites were fabricated by spark plasma sintering and hot rolling. The effects of sintering temperature and CNTs content on the microstructures and mechanical properties of the composites were investigated. It has been shown that the composite reinforced by 0.75 vol% CNTs and sintered at 630 degrees C has the best comprehensive mechanical properties, due to the combined positive effects of the good Al-CNTs interfacial bonding, full densification of the composite and the uniform dispersion of the CNTs. It has been found that the load transfer strengthening and dispersion strengthening of CNTs are the dominant strengthening mechanisms in the composites. The study provides a guidance for manufacturing the flat products of Al/CNTs composites with high strength and good ductility.
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