Journal ArticleDOI
Bioinspired hierarchical Al2O3/Al laminated composite fabricated by flake powder metallurgy
Zhiming Zhang,Zan Li,Zhanqiu Tan,Haitao Zhao,Genlian Fan,Yanjin Xu,Ding-Bang Xiong,Zhiqiang Li +7 more
TLDR
Inspired by nacre's design principle, a bottom-up strategy by self-assembly alignment of flake powders, namely flake powder metallurgy, is employed to fabricate bio-inspired laminated composites with brick-and-mortar structure as mentioned in this paper.Abstract:
Inspired by nacre’s design principle, a bottom-up strategy by self-assembly alignment of flake powders, namely flake powder metallurgy, is employed to fabricate bioinspired laminated composites with brick-and-mortar structure. The microscale flake Al2O3 powders and flake Al powders with native Al2O3 nanolayers are utilized to fabricate the bioinspired hierarchical Al2O3/Al laminated composites, and the composites with 5 vol% Al2O3 achieves an enhancement of 22% in strength with only a 7% compromise on ductility, leading to a notable improvement in toughness (17%) compared to the corresponding Al matrix. The higher strain hardening due to enhanced dislocation accumulation capacity at hierarchical Al2O3/Al interface can delay the occurrence of necking, and the large elongation after peak stress is attributed to multiple extrinsic toughening effect from brick-and-mortar structure. The bottom-up strategy can guide the design and fabrication of advanced bioinspired laminated composites to achieve enhanced mechanical performance.read more
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A novel biomimetic approach to the design of high-performance ceramic/metal composites
TL;DR: It is demonstrated that the concept of ordered hierarchical design can be applied to create fine-scale laminated ceramic–metal (bulk) composites that are inexpensive, lightweight and display exceptional damage-tolerance properties.
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Temperature-dependent reversed fracture behavior of multilayered TiBw/Ti–Ti(Al) composites
TL;DR: In this paper, the authors proposed a heterogeneous laminated/gradient integrated strategy with the purpose of maximizing the role of laminated or gradient structure for performance enhancement, and demonstrated that the major stressbearing constituents gradually change from Ti(Al) to TiBw/Ti layers as the deformation temperature increases, leading to the temperature-dependent reversed fracture behavior.
Journal ArticleDOI
Bioinspired multiscale Al2O3-rGO/Al laminated composites with superior mechanical properties
TL;DR: In this article, a multiscale Al2O3-rGO/Al laminated composite via flake powder metallurgy is presented, which has the synergistic strengthening effect of 1 + ǫ+ǫ 1>2.
Journal ArticleDOI
Synergistic optimization in solidification microstructure and mechanical performance of novel (TiC N − TiB2)p/Al nanocomposites: Design, tuning and mechanism
TL;DR: In this article , the authors proposed a novel in-situ synthesis strategy of designing master alloys decorated with well-dispersed TiCxNy and TiB2 particles to synergistically optimize the Al-Si based composites.
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Microstructure and mechanical behaviors of Al/Cu laminated composites fabricated by accumulative roll bonding and intermediate annealing
TL;DR: In this article , accumulative roll bonding (ARB) and/or intermediate annealing was employed to prepare Al/Cu laminated composites as cheaper substitutes for Cu alloys due to lightweight and considered electrical conductivity.
References
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