Enhanced mechanical properties of SiC/Al composites at cryogenic temperatures

Liu, Qiuyuan; Wang, Feng; Wu, Weiwei; An, Di; He, Z. Y.; Xue, Yanpeng; Zhang, Qifu; Xie, Zhihui

doi:10.1016/j.ceramint.2018.10.233

Cited by 33 publications

(3 citation statements)

References 25 publications

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“…The SiCp/Al composite consists mainly of aluminum alloy as the matrix and SiC particles as the reinforcing phase. It has been widely used in many cutting-edge fields, such as aerospace, automobiles, electronics, and medical and optical instruments [ 1 , 2 , 3 , 4 , 5 , 6 ]. Due to the large elastoplasticity of the aluminum matrix and the high hardness of SiC particles, serious tool wear, adhesion, and tipping occur easily during the machining process.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Micro-Pit-Textured PCD Tools and Micro-Turning Experiment on SiCp/Al Composites

Wang

Popov

et al. 2022

Micromachines

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Serious tool wear occurs very often during machining due to the reinforcing phases in the workpiece. In this study, micro-pit-textures were prepared on the surfaces of PCD tools with a nanosecond laser to improve their cutting performance on SiCp/Al composites. The micro-pits were designed with rounded corners to improve the chip flow. The location and size of the texture were determined by analyzing the tool-chip contact area of the non-textured tool. The cutting performance of these textured PCD tools was investigated through orthogonal cutting experiments. It was found that the optimal cutting performance of the textured tools was achieved with the proper distance of the texture from the main cutting edge (35 μm) and the pit spacing (60 μm), aa a result of which the main cutting force reduced by about 14%, and the tool wear and surface adhesion significantly reduced. This texture was then applied in the micro-turning experiments of the PCD tool on the SiCp/Al composites. The cutting force in this experiment reduced by 22%, and the textured tool provided better chip transfer and tool anti-tipping. In this study, the role of SiC particles as a third body between the tool and the chip surface is discussed.

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Section: Introductionmentioning

confidence: 99%

Preparation of Micro-Pit-Textured PCD Tools and Micro-Turning Experiment on SiCp/Al Composites

Wang

Popov

et al. 2022

Micromachines

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“…Composites are increasingly used in the aerospace, automotive, and biomedical industries [1][2][3][4]. A composite has superior performance.…”

Section: Introductionmentioning

confidence: 99%

“…It can be concluded that the fracture toughness of the composites increased with the increasing of the proportion of GSA. In addition, silicon carbide-aluminum composites can be prepared by the pressureless infiltration technique [1] and vacuum-pressure infiltration [16]. Based on experimental method, the composite of silicon carbide and aluminum have been obtained.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of toughness of SiC through compositing SiC–Al interpenetrating phase composites

Xie

Sun

et al. 2020

Nanotechnology

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Silicon carbide has excellent properties such as high hardness and decomposition temperature, but its applications are limited by its poor toughness. Here, we investigate the enhancement of SiC’s toughness by compositing silicon carbide–aluminum (SiC–Al) interpenetrating phase composites (IPCs) via molecular dynamics simulations. IPCs are a class of composites consisting of two or more phases that are topologically continuous and three-dimensionally interconnected through the microstructure. The Young’s modulus and ultimate strength gradually increases with an increment of the volume fraction of SiC, opposite to the fracture strain. The interface between SiC and Al affects the mechanical properties of SiC–Al IPCs. When the volume fraction of SiC is less than 0.784, the attenuation rate of ultimate strength and fracture strain decreases. The attenuation rate increases when the volume fraction of SiC is more than 0.784. There are a minimum of ultimate strength and fracture strain at the 0.784, 0.7382 and 2.8610, respectively. The hardness of SiC–Al IPCs is about 48% of SiC. The change of SiC–Al IPCs hardness is more stable than that of SiC in the later stage of the nanoindentation test.

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Effect of Thermal Cycling on Microstructure and Mechanical Properties of C_f/SiC–Al Composites

et al. 2023

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Thermal cycling inevitably affects the microstructure and mechanical properties of composites due to the differences in thermal expansion coefficients (CTEs) of each component. Herein, the evolution of the microstructure and in‐plane compressive properties of Cf/SiC–Al composites after different thermal cycles at different temperature differences are investigated. Moreover, the magnitude and state of residual thermal stress in each component of the composites after thermal cycling are further analyzed by X‐ray diffraction and nanoindentation methods. The results show that with the increase of the temperature difference and the number of thermal cycles, the residual stress in each component gradually accumulates, accompanied by interface debonding and microcracks in the fiber/matrix interface area, which can release part of the residual stress. The evolution of the residual stress and the interface microstructure has a significant effect on the in‐plane compressive strength of the composites. The release of residual stress and the generation of some microcracks are beneficial to the compressive strength, but too many microcracks can reduce the strength.

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Enhanced mechanical properties of SiC/Al composites at cryogenic temperatures

Cited by 33 publications

References 25 publications

Preparation of Micro-Pit-Textured PCD Tools and Micro-Turning Experiment on SiCp/Al Composites

Preparation of Micro-Pit-Textured PCD Tools and Micro-Turning Experiment on SiCp/Al Composites

Enhancement of toughness of SiC through compositing SiC–Al interpenetrating phase composites

Effect of Thermal Cycling on Microstructure and Mechanical Properties of C_f/SiC–Al Composites

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Enhanced mechanical properties of SiC/Al composites at cryogenic temperatures

Cited by 33 publications

References 25 publications

Preparation of Micro-Pit-Textured PCD Tools and Micro-Turning Experiment on SiCp/Al Composites

Preparation of Micro-Pit-Textured PCD Tools and Micro-Turning Experiment on SiCp/Al Composites

Enhancement of toughness of SiC through compositing SiC–Al interpenetrating phase composites

Effect of Thermal Cycling on Microstructure and Mechanical Properties of Cf/SiC–Al Composites

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Effect of Thermal Cycling on Microstructure and Mechanical Properties of C_f/SiC–Al Composites