Effects of reinforcement surface modification on the microstructures and tensile properties of SiCp/Al2014 composites

Zhang, Longjiang; Yang, De-Long; Qiu, Feng; Wang, Jinguo; Jiang, Qi‐Chuan

doi:10.1016/j.msea.2014.11.066

Cited by 39 publications

(18 citation statements)

References 29 publications

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“…The enhanced fracture strain, 13.4%, is well consistent with the upper bound, 12%-15%, experimentally discovered in wurtzite ZnO NWs [22]. Surface modification is also implemented to enlarge fracture strain of a lot of materials [53,54].…”

Section: Large Dispersion Of Fracture Strain Of Wurtzite Zno Nwssupporting

confidence: 83%

On the wurtzite to tetragonal phase transformation in ZnO nanowires

et al. 2017

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Dynamic behaviour of silicon carbide nanowires under high and extreme strain rates: a molecular dynamics study H Tsuzuki, J P Rino and P S Branicio There is a long standing contradiction on the tensile response of zinc oxide nanowires between theoretical prediction and experimental observations. Although it is proposed that there is a ductile behavior dominated by phase transformation, only an elastic deformation and brittle fracture was witnessed in experiments. Using molecular dynamics simulations, we clarified that, as the lateral dimension of zinc oxide nanowires increases to a critical value, an unambiguous ductile-to-brittle transition occurs. The critical value increases with decreasing the strain rate. Factors including planar defects and surface contamination induce brittle fracture prior to the initiation of phase transformation. These findings are consistent with previous atomistic standpoints and experimental results.

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Section: Large Dispersion Of Fracture Strain Of Wurtzite Zno Nwssupporting

confidence: 83%

On the wurtzite to tetragonal phase transformation in ZnO nanowires

et al. 2017

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“…It is widely accepted that the dispersal uniformity of ceramic particles in metal composite is mainly influenced by wetting between them during solidification [9,10]. However, electroless deposition of Ni, Cu coating layer and pre-oxidation of SiC P did not achieve the composite with the engulfment of SiC P into α-Al grain interiors [6]. Because Ni and Cu coating layer can diffuse into or react with Al alloy melt, which will disappear from the surface of SiC P , and thus those coating layer did not improve the wettability of SiC by Al alloy melt during solidification.…”

Section: Resultsmentioning

confidence: 99%

“…Due to the good physical properties of SiC, many composites reinforced by SiC P have been successfully fabricated by casting, such as Zn-Al/SiC P [11], Mg-Al/SiC P [26], Al-Cu/SiC P [6] and Al-Si/SiC P [12]. Nevertheless, the low wetting between SiC and Al alloy melt [32] invariably leads to heterogeneous distribution of SiC P in the matrix [6,11]. Therefore, many researchers have paid more attention on surface modification of SiC P to improve the dispersal uniformity of SiC P .…”

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

“…Therefore, many researchers have paid more attention on surface modification of SiC P to improve the dispersal uniformity of SiC P . The preoxidation of SiC P is an effective way to improve the mechanical properties of SiC P /Al composites, but there is no assertive evidence to prove that the pre-oxidation could improve the wetting between oxidized SiC P and molten Al or significantly improve the dispersal uniformity of SiC P [6,27]. The electroless deposition of Ni, Cu or Ag is deemed to be a way to improve wetting between molten Al and the SiC P .…”

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

“…Therefore, various manufacturing and processing routes have been explored and proposed [3,[6][7][8]. Among these methods, the stir casting technique has been the most important one because of its low cost and ease-to-handle considerations [9].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Ti-coating layer on the distribution of SiCP in the SiCP/2014Al composites

et al. 2015

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a b s t r a c t A Ti 5 Si 3 coating layer was plated on the surface of SiC P by salt-bath plating. The coating layer greatly promoted the wettability of SiC by the molten Al with the final contact angle decreasing from 94°of uncoated one to 4°at 973 K. The 2 vol.% Ti-coated SiC P /2014Al composites were fabricated by stir casting with the addition of 20 vol.% Ti-coated SiC P /2014Al master alloy. Due to the significant improvement of the wetting between the Ti-coated SiC and Al melt, the interfacial energy between Ti-coated SiC P and Al melt is significantly higher than that between α-Al and Ti-coated SiC P . Therefore, Ti-coated SiC P was more easily engulfed into α-Al grains during solidification, leading to a more homogeneous distribution of SiC P and obvious improvement of tensile property for the composites. The yield strength, ultimate tensile strength and fracture strain of the 2 vol.% Ti-coated SiC P /2014Al composites increased from 389 MPa, 525 MPa and 4.8% of the 2 vol.% uncoated SiC p /2014Al composites to 420 MPa, 576 MPa and 6.8%, respectively. The present work offers a new method to improve the dispersal uniformity of SiC P in the composites.

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Microstructures and Properties of the Copper‐Coated SiC_p Reinforced Al–Si Alloy Composites

et al. 2017

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Copper-coated silicon carbide (SiC) particles have been developed to improve the strength and wear resistance of Al-Si matrix composites, which are utilized in brake pads and, hence find applications in aerospace and automobile industries. Copper-coated SiC powder is prepared by electroless plating and is characterized by scanning electron microscopy and X-ray diffraction. Copper-coated SiCp reinforced Al-Si composites are prepared by a powder metallurgy method, and their microstructures and properties are compared with those of Al-Si and Al-Si-Cu matrix composites reinforced with SiCp without copper coating. Our results show that the copper-coated SiC p -reinforced Al-Si composite exhibits advantageous mechanical properties and better frictional wear resistance.

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Effects of reinforcement surface modification on the microstructures and tensile properties of SiCp/Al2014 composites

Cited by 39 publications

References 29 publications

On the wurtzite to tetragonal phase transformation in ZnO nanowires

On the wurtzite to tetragonal phase transformation in ZnO nanowires

Effects of Ti-coating layer on the distribution of SiCP in the SiCP/2014Al composites

Microstructures and Properties of the Copper‐Coated SiC_p Reinforced Al–Si Alloy Composites

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Effects of reinforcement surface modification on the microstructures and tensile properties of SiCp/Al2014 composites

Cited by 39 publications

References 29 publications

On the wurtzite to tetragonal phase transformation in ZnO nanowires

On the wurtzite to tetragonal phase transformation in ZnO nanowires

Effects of Ti-coating layer on the distribution of SiCP in the SiCP/2014Al composites

Microstructures and Properties of the Copper‐Coated SiCp Reinforced Al–Si Alloy Composites

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Microstructures and Properties of the Copper‐Coated SiC_p Reinforced Al–Si Alloy Composites