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On the Effective Elastic Properties of SiC/Al Metal Matrix Composite within an Intermingled Fractal Units Model

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Abstract

The microstructure of particle-reinforced metal matrix composites (PMMCs) and its parameters (such as particle size distribution, particle volume fraction, particle shape, etc.) have a great influence on the elastic modulus of PMMC. In this paper, the intermingled fractal units (IFU) model was used to describe the microstructure of PMMCs. Based on the spring series-parallel connection model, an analytical method of predicting the elastic modulus was proposed, and the area fraction, size distribution, and interface of the reinforced particles were taken into consideration. The tensile experiments performed on three groups of the SiC/Al composite specimens with different microstructure (namely, of different particle shape, size, and volume fraction of reinforcing particles) were conducted to evaluate the elastic modulus and strength properties. The comparison between the predicted and experimental results has proved the applicability and effectiveness of the method proposed in this paper.

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Funding

This study was funded by the National Science and Technology Major Project (2017-VI-0003-0073) and the Priority Academic Program Development of Jiangsu Higher Education Institutions (grant no. 1108007002).

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Authors and Affiliations

  1. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, 210016, Nanjing, China

    Wen Jiang, Weixing Yao, Piao Li & Mingze Ma

  2. Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle, Nanjing University of Aeronautics and Astronautics, 210016, Nanjing, China

    Weixing Yao

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  1. Wen Jiang
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Correspondence to Weixing Yao.

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Wen Jiang, Yao, W., Li, P. et al. On the Effective Elastic Properties of SiC/Al Metal Matrix Composite within an Intermingled Fractal Units Model. Phys. Metals Metallogr. 122, 1409–1418 (2021). https://doi.org/10.1134/S0031918X21130056

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  • DOI: https://doi.org/10.1134/S0031918X21130056

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