Investigation on Critical Microstructure Size for Numerical Analysis of Metal-Matrix Composites with Network Reinforcement Architecture

Author:

Gao Xiang12ORCID,Lu Xiaonan12ORCID,Zhang Xuexi3ORCID,Qian Mingfang3ORCID,Li Aibin3,Geng Lin3,Wang Huan2ORCID,Liu Cheng2ORCID,Gong Bowen2ORCID,Peng Hua-Xin12ORCID

Affiliation:

1. Ningbo Innovation Center, Zhejiang University, Ningbo 315100, P. R. China

2. Institute for Composites Science Innovation (InCSI), School of Materials Science and Engineering, Zhejiang University, Hangzhou 300027, P. R. China

3. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China

Abstract

Finite element method (FEM) is a powerful tool to predict the properties and reveal the mechanisms of metal-matrix composites (MMCs) with very complex architectures and novel microstructures. Recent studies have demonstrated the effectiveness of network reinforcement architectures on simultaneous strengthening and toughening. Here, as a key factor in modeling network architecture, the critical microstructure size was studied via FEM. We found that a critical microstructure size of 23 [Formula: see text]m (cell count [Formula: see text]20) existed in the FEM model, beyond which the crack deflection may be feasibly induced from particle-rich to matrix regions, leading to crack propagation in the ductile matrix cells and thus high strength and elongation. While, with cell size 20–23 [Formula: see text]m in SiC/6061Al model, the composite strength and elongation remained intact, implying that the maximal microstructure size is 23 [Formula: see text]m for effective network architecture simulations.

Funder

National Natural Science Foundation of China

Key Technologies Research and Development Program

Publisher

World Scientific Pub Co Pte Ltd

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