MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Effect of Sintered Reinforcement on Characteristics of MWCNT-Reinforced Aluminum Alloy Composite via Friction Stir Processing
Tomonobu OwaYasuo ShimizuShoji KaiumeYoshio Hashimoto
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2019 Volume 60 Issue 6 Pages 1018-1025

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Abstract

In order to enhance the strength of 5083 Al alloy, fabrication of multi-walled carbon nanotubes (MWCNTs) reinforced 5083 Al alloy by the use of friction stir processing (FSP) was investigated. The MWCNT-reinforced Al alloy composites using sintered sheets of 5083 Al alloy-8%MWCNT were successfully fabricated. Grain refinement and many minute aluminum carbides (Al4C3) were observed in the composites fabricated. The proof stress of the composites fabricated with the 550°C sintered sheets considerably increased by 153 percent and the tensile strength increased by 55 percent compared with that of the base material.

Fig. 11 Stress-strain curves for base material and stir zones and summary for mechanical properties. Fullsize Image
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© 2019 The Japan Institute of Metals and Materials
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