Simultaneously enhancing strength and ductility of carbon nanotube/aluminum composites by improving bonding conditions. (1st March 2016)

• Record Type: Journal Article
• Authors: Chen, B.; Kondoh, K.; Imai, H.; Umeda, J.; Takahashi, M.
• Is Part Of: Scripta materialia. Volume 113(2016)
• Page Start: 158
• Page End: 162
• Publication Date: 2016-03-01
• Subjects: Metal matrix composite (MMC) -- Carbon nanotubes (CNTs) -- Strength -- Ductility -- Bonding; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.11.011
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: The limited ductility of high-strength aluminum (Al) matrix composites (AMCs) reinforced with carbon nanotubes (CNTs) is a critical issue, which hinders their engineering applications. Here, we report a significantly improved ductility of CNT/Al composites with a simultaneously increased tensile strength using elevated sintering temperatures. The traditional trade-off tendency between strength and ductility is evaded in CNT/Al composites owing to concurrent improvement of Al–Al grain and CNT–Al interface bonding. The interfacial characteristics are investigated through microstructural examination and quantitative estimation using strengthening models. The study provides a strategy for fabricating CNT-reinforced metal matrix composites with high strength and good ductility. Graphical abstract: