Journal ArticleDOI
Enhancing strength-ductility synergy of carbon nanotube/7055Al composite via a texture design by hot-rolling
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TLDR
In this paper, texture optimization through hot-rolling was employed to improve the strength-ductility of the CNT/7055Al composites, which is an urgent problem to be solved.Abstract:
The limited ductility of carbon nanotubes reinforced Al matrix (CNT/Al) composites hinders their engineering applications, which is an urgent problem to be solved. Herein, texture optimization through hot-rolling was employed to improve the strength-ductility of the CNT/7055Al composites. Microstructural examinations indicate that the composite subjected to extrusion (CNT/7055Al-E) had a bimodal structure with the coarse and ultrafine grains. The composite subjected to extrusion followed by hot-rolling (CNT/7055Al-ER) exhibited a uniform ultrafine grain structure. No further structure damage or aggregation was detected for the CNTs after hot-rolling. The texture analysis demonstrates that the CNT/7055Al-E had a fiber texture, while the CNT/7055Al-ER had a plate texture including {011} , {113} and {215} components with higher texture intensity. Compared with the CNT/7055Al-E, the CNT/7055Al-ER increased twofold in elongation with a slight decrease in strength, which was attributed to the favorable grain orientations, the increased proportion of low angle grain boundaries, as well as the fine and densely distributed precipitates. Further, the mechanical property anisotropy of the composite was weakened after hot-rolling due to the elimination of coarse grain bands.read more
Citations
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Exploring a hybrid manufacturing process to develop high performance age hardenable ultrafine grained AA6063/SiC nano-composite sheets
TL;DR: In this paper, a hybrid manufacturing process consisting of cryorolling (CR) followed by warm rolling (WR) was established to develop high performance AA6063/SiC nano-composite sheets.
Journal ArticleDOI
Effect of Copper Coating on Interfacial Properties, Interfacial Thermal Resistance, Microstructure Evolution and Mechanical Properties of Aluminum Matrix Composites
Ying-li 郭颖利 Guo,Li Wenquan,Liu Xin-gang,Kenji Sugio,Ke Yu-jiao,Wang Kai-yao,Liu Wen-chuang,Gen Sasaki +7 more
Journal ArticleDOI
Effect on microstructure and mechanical properties of in situ 6 wt%TiB2/Al–Zn–Mg–Cu composite subjected by two-step orthogonal deformation process
Jingcun Huang,Xiang Zhilei,Jihao Li,Ma Xiaozhao,Zian Yang,Gaoliang Shen,Zhitian Wang,Ziyong Chen +7 more
TL;DR: In this article, the 6wt% TiB2/Al-Zn-Mg-Cu composite subjected to two-step orthogonal deformation has been studied and shown to have excellent mechanical properties.
Journal ArticleDOI
Effect of copper coating on interfacial properties, interfacial thermal resistance, microstructure evolution and mechanical properties of aluminum matrix composites
TL;DR: In this paper , uncoated and copper-coated short carbon fiber reinforced aluminum matrix composites were prepared by spark plasma sintering and the arrangement of the short carbon fibers was changed by hot rolling.
Journal ArticleDOI
Microstructure evolution and strength-ductility improving mechanism change of heterogeneous CNT/2009Al composite after hot rolling
TL;DR: In this paper , CNT-free ductile zones (DZs) and CNTrich brittle zones were prepared by powder metallurgy, followed by hot extrusion and hot rolling, which led to the slightly reduced yield strength, similar ultimate tensile strength, and increased elongation for the rolled heterogeneous composite, as compared with those of the extruded heterogenous composite.
References
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