Bioinspired multiscale Al2O3-rGO/Al laminated composites with superior mechanical properties. (15th July 2021)

• Record Type: Journal Article
• Authors: Zhang, Zhiming; Fan, Genlian; Tan, Zhanqiu; Zhao, Haitao; Xu, Yanjin; Xiong, Dingbang; Li, Zhiqiang
• Is Part Of: Composites. Number 217(2021)
• Publication Date: 2021-07-15
• Subjects: A. Metal matrix composites -- B. Mechanical properties -- B. Microstructures -- E. Powder processing; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2021.108916
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: Nacre's multiscale reinforcing mechanisms provide lessons for the design and fabrication of high-performance engineering composites. In this study, the addition of hierarchically aligned flake Al2 O3 and reduced Graphene Oxide (rGO) nanosheets into Al matrix constitute the bioinspired multiscale Al2 O3 -rGO/Al laminated composite via flake powder metallurgy. The results show that multiscale Al2 O3 -rGO reinforcements have the synergistic strengthening effect of 1 + 1>2. Extra strengthening mechanism is attributed to enhanced load transfer due to good bonding at Al2 O3 /rGO/Al interface. Compared to Al2 O3 /Al composite, the uniform elongation of Al2 O3 -rGO/Al laminated composite doesn't decrease due to the higher strain hardening capacity. The work presented here provides a new strategy for developing advanced composites with simultaneous enhancement of the modulus-strength-ductility.