Correlation Between Microstructural Architecture and Mechanical Behavior of Single-Walled Carbon Nanotube-Aluminum Composites
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Single-walled carbon nanotube (SWCNT)-aluminum (Al) composites with three distinct microstructural architectures (nanolaminated structure with relatively weak interfacial bonding, partial laminated structure with strong interfacial bonding, and disordered microstructure) were fabricated. Tensile test revealed that partial laminated composite possessed the highest yield and tensile strengths with an almost identical uniform elongation among the three composites, which were rationalized by grain refinement of Al matrix, effective load-sharing of SWCNTs, and enhanced interface-dislocation interactions in partial laminated composite.
This work was supported by the financial support from the Ministry of Science and Technology of China (Nos. 2016YFE0130200, 2017YFB0703100), the Natural Science Foundation of China (Nos. 51771111), the Science & Technology Committee of Shanghai Municipality (No. 17520712400), and the Australian Research Council. The authors also appreciate the support from Bruker China Co. Ltd. for microstructural analyses based on on-axis TKD technique, and the help from Dr. Y. Yang, Dr. G. Li, and Mr. W. Gao for TKD data acquisition and interpretation.