A Novel Approach of Using Ground CNTs as the Carbon Source to Fabricate Uniformly Distributed Nano-Sized TiCx/2009Al Composites

Wang, Lei; Qiu, Feng; Ouyang, Licheng; Wang, Huiyuan; Zha, Min; Shu, Shili; Zhao, Qinglong; Jiang, Qi‐Chuan

doi:10.3390/ma8125495

Cited by 21 publications

(14 citation statements)

References 32 publications

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“…In the past decades, particulate reinforced aluminum matrix composites (AMCs) have attracted much attention in the field of structural and functional materials [1][2][3][4]. SiC p reinforced AMCs have been a hot research issue in recent years because of their excellent properties such as low density, high tensile strength, high elastic modulus and wear resistance, etc.…”

Section: Introductionmentioning

confidence: 99%

Microstructures and Tensile Properties of Al–Cu Matrix Composites Reinforced with Nano-Sized SiCp Fabricated by Semisolid Stirring Process

Qiu

Gao

Tang

et al. 2017

Metals

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Abstract:The nano-sized SiC p /Al-Cu composites were successfully fabricated by combining semisolid stirring with ball milling technology. Microstructures were examined by an olympus optical microscope (OM), field emission scanning electron microscope (FESEM) and transmission electron microscope (TEM). Tensile properties were studied at room temperature. The results show that the α-Al dendrites of the composites were strongly refined, especially in the composite with 3 wt. % nano-sized SiC p , of which the morphology of the α-Al changes from 200 µm dendritic crystal to 90 µm much finer equiaxial grain. The strength and ductility of the composites are improved synchronously with the addition of nano-sized SiC p particles. The as-cast 3 wt. % nano-sized SiC p /Al-Cu composite displays the best tensile properties, i.e., the yield strength, ultimate tensile strength (UTS) and fracture strain increase from 175 MPa, 310 MPa and 4.1% of the as-cast Al-Cu alloy to 220 MPa, 410 MPa and 6.3%, respectively. The significant improvement in the tensile properties of the composites is mainly due to the refinement of the α-Al dendrites, nano-sized SiC p strengthening, and good interface combination between the SiC p and Al-Cu alloys.

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Section: Introductionmentioning

confidence: 99%

Microstructures and Tensile Properties of Al–Cu Matrix Composites Reinforced with Nano-Sized SiCp Fabricated by Semisolid Stirring Process

Qiu

Gao

Tang

et al. 2017

Metals

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“…Following this viewpoint, it can be inferred that the σ UCS and σ 0.2 of the composites with cubic-TiC x particles can be greatly enhanced by the pinning effect and the stress concentration near edges and corners of cubic-TiC x particles. As for the spherical TiC x particles, TiC x particles with small size have higher surface energy and are easier to agglomerate than TiC x particles with large size [ 24 ]. As a result, the agglomeration of TiC x particles played a role as original crack, contributing to the performance reduction of the composite.…”

Section: Resultsmentioning

confidence: 99%

“…Liang et al [ 23 ] investigated the thermal explosion reaction behavior of Cu-Ti-C systems with different Ti and C particle sizes, and the found that the sizes of C particles have a great influence on the ignition temperatures of the system. Wang et al [ 24 , 25 ] used grounded carbon nanotubes (CNTs), which were treated via high speed ball milling, as carbon source to fabricate nano-sized TiC x particle-reinforced Al matrix composites. Results showed that tensile strength was improved for the ball milling treatment of CNTs.…”

Section: Introductionmentioning

confidence: 99%

Compression Properties and Electrical Conductivity of In-Situ 20 vol.% Nano-Sized TiCx/Cu Composites with Different Particle Size and Morphology

et al. 2017

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The compression properties and electrical conductivity of in-situ 20 vol.% nano-sized TiCx/Cu composites fabricated via combustion synthesis and hot press in Cu-Ti-CNTs system at various particles size and morphology were investigated. Cubic-TiCx/Cu composite had higher ultimate compression strength (σUCS), yield strength (σ0.2), and electric conductivity, compared with those of spherical-TiCx/Cu composite. The σUCS, σ0.2, and electrical conductivity of cubic-TiCx/Cu composite increased by 4.37%, 20.7%, and 17.8% compared with those of spherical-TiCx/Cu composite (526 MPa, 183 MPa, and 55.6% International Annealed Copper Standard, IACS). Spherical-TiCx/Cu composite with average particle size of ~94 nm exhibited higher ultimate compression strength, yield strength, and electrical conductivity compared with those of spherical-TiCx/Cu composite with 46 nm in size. The σUCS, σ0.2, and electrical conductivity of spherical-TiCx/Cu composite with average size of ~94 nm in size increased by 17.8%, 33.9%, and 62.5% compared with those of spherical-TiCx/Cu composite (417 MPa, 121 MPa, and 40.3% IACS) with particle size of 49 nm, respectively. Cubic-shaped TiCx particles with sharp corners and edges led to stress/strain localization, which enhanced the compression strength of the composites. The agglomeration of spherical-TiCx particles with small size led to the compression strength reduction of the composites.

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“…As we known, the combustion synthesis is the optimal way to prepare TiC x particle-reinforced metal matrix composites [13][14][15][16][17][18][19][20]. The shape of TiC x particles in metal matrix can be controlled through the alteration of kinetics and thermodynamic conditions during combustion synthesis.…”

Section: Introductionmentioning

confidence: 99%

Shape-Controlled TiCx Particles Fabricated by Combustion Synthesis in the Cu-Ti-C System

et al. 2017

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TiC x particle-reinforced Cu-matrix composites were prepared in the Cu-TiC system by thermal explosion and hot press. Extracted TiC x particles with various shapes of in situ TiC x particles in the Cu-TiC system were observed through the Field Emission Scanning Electron Microscope (FESEM). It was found that octahedral and close-to-spherical, spherical or cubic TiC x could be fabricated by changing the C/Ti molar ratio and Cu content. Then, the effect of the C/Ti molar ratio and constituent element concentrations on the shape of in situ TiC x particles was determined: the shape of TiC x particles is octahedral at a C/Ti ratio of 0.4-0.6 with the presence of 70 vol% Cu; or spherical and close-to-spherical at 0.8-1.0 with the presence of 70 vol% Cu; or cubic at C/Ti ratios ≥1.0 with the presence of Cu from 80 vol%-90 vol% and even at C/Ti ratios >1.0 with the presence of 70 vol% Cu. The shape-controlled synthesis of TiC x particles in the Cu-TiC system is realized.

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A Novel Approach of Using Ground CNTs as the Carbon Source to Fabricate Uniformly Distributed Nano-Sized TiCx/2009Al Composites

Cited by 21 publications

References 32 publications

Microstructures and Tensile Properties of Al–Cu Matrix Composites Reinforced with Nano-Sized SiCp Fabricated by Semisolid Stirring Process

Microstructures and Tensile Properties of Al–Cu Matrix Composites Reinforced with Nano-Sized SiCp Fabricated by Semisolid Stirring Process

Compression Properties and Electrical Conductivity of In-Situ 20 vol.% Nano-Sized TiCx/Cu Composites with Different Particle Size and Morphology

Shape-Controlled TiCx Particles Fabricated by Combustion Synthesis in the Cu-Ti-C System

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