Effects of reinforcement distribution on low and high temperature tensile properties of Al356/SiCp cast composites produced by a novel reinforcement dispersion technique

Amirkhanlou, Sajjad; Niroumand, Behzad

doi:10.1016/j.msea.2011.06.013

Cited by 38 publications

(10 citation statements)

References 40 publications

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“…% and 3 wt. %) are improved synchronously which is quite rare for the composites reinforced with ceramic particles, because in most reported works [11,14,20,21], the composites had a higher strength and lower ductility than the matrix alloy. The yield strength (σ 0.2 ), ultimate tensile strength (UTS) and fracture strain (ε) of the nano-sized SiC p /Al-Cu composites firstly increase and then decrease with the increase in the content of SiC p .…”

Section: Resultsmentioning

confidence: 99%

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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: Resultsmentioning

confidence: 99%

“…Al-Si and Al-Mg alloys are the usually used matrix phase in nano-sized SiC p /Al composites [10,16,20,21]. Xiong et al [10] fabricated 14 vol.…”

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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“…These micrographs demonstrate that the annealed sample exhibited a typical ductile fracture showing deep equiaxed dimples. The ductile fracture includes three steps [59][60][61][62][63][64]; the nucleation, growth, and coalescence of microvoids near the center of the test specimens. Microvoids formation can be attributed to localized overloads throughout the specimen as seen in Figure 12a.…”

Section: Fractographymentioning

confidence: 99%

Gradual formation of nano/ultrafine structure under accumulative press bonding (APB) process

Amirkhanlou

Askarian

Ketabchi

et al. 2015

Materials Characterization

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“…Due to the uniform distribution of SiC particles in composites, components made from SiC p /Al MMCs are nearly isotropic and readily formable. Moreover, this material can be tailored to satisfy specific requirements via change of the volume ratio of SiC in composites, which makes it especially attractive for aerospace engineering, the automotive industry, and electronic packaging applications [8][9][10][11][12]. Joining is an important technological process to be used in these industrial applications involving SiC p /Al MMCs.…”

Section: Introductionmentioning

confidence: 99%

Flux-Free Diffusion Joining of SiCp/6063 Al Matrix Composites Using Liquid Gallium with Nano-Copper Particles in Atmosphere Environment

et al. 2020

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A new method for flux-free diffusion joining of aluminum matrix composites reinforced with SiC particles (SiCp/Al MMCs) in atmosphere environment has been developed. Liquid gallium and nano-copper particles were employed as filler metal under joining temperatures ranging between 400 °C to 480 °C, with a holding time of 2 h and pressure of 3 MPa. The results showed that 65 vol.% SiCp/6063 Al MMCs were successfully joined together. X-ray diffraction (XRD) analysis confirmed the presence of Ga2O3 at the fracture. Meanwhile, neither copper oxide nor aluminum oxide was detected. The formation of Ga2O3 can protect nano-copper particles and SiCp/6063 Al MMCs from oxidation. The width of weld seam tended to be narrowed from 40 μm to 14 μm gradually with increasing temperature from 400 °C to 480 °C. The maximum shear strength level of 41.2 MPa was achieved with a bonding temperature of 450 °C. The change of the strength was due to the adequate elements’ mutual diffusion and solution, as well as the change of the quantity and morphology of intermetallic compounds in the weld seam, such as Al2Cu and Cu3Ga. When the diffusion joining temperature reached 440 °C or above, the leak rate of the specimen remained under 10−10 Pa·m3/s.

show abstract

Effects of reinforcement distribution on low and high temperature tensile properties of Al356/SiCp cast composites produced by a novel reinforcement dispersion technique

Cited by 38 publications

References 40 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

Gradual formation of nano/ultrafine structure under accumulative press bonding (APB) process

Flux-Free Diffusion Joining of SiCp/6063 Al Matrix Composites Using Liquid Gallium with Nano-Copper Particles in Atmosphere Environment

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