Bending mechanical property and failure mechanisms of woven carbon fiber-reinforced aluminum alloy composite

• Published in: Rare metals Vol. 35; no. 12; pp. 915 - 919
• Main Authors: Yang, Qiu-Rong, Liu, Jin-Xu, Li, Shu-Kui, Wu, Teng-Teng
• Format: Journal Article
• Language: English
• Published: Beijing Nonferrous Metals Society of China 01.12.2016; Springer Nature B.V
• Subjects: Bending; Biomaterials; Carbon fibers; Chemistry and Materials Science; Crack propagation; Cracking (fracturing); Energy; Fracture mechanics; Materials Engineering; Materials Science; Mechanical properties; Metallic Materials; Microstructure; Nanoscale Science and Technology; Physical Chemistry; 基体合金; 失效机理; 弯曲力学性能; 放电等离子烧结; 显微组织分析; 机织; 碳纤维增强; 铝合金复合材料; Bending strength; Carbon fibers; Composites; Mechanisms; Aluminum alloy
• ISSN: 1001-0521; 1867-7185
• DOI: 10.1007/s12598-014-0271-x

Copper-coated woven carbon fiber-reinforced aluminum alloy composite was prepared by spark plasma sintering （SPS）. Microstructure, three-point bending mechanical property, and the failure mechanisms of the composite were investigated. Microstructure observation shows that the carbon fibers bond compactly with matrix alloy. Compared with the matrix aluminum alloy, the bending strength, ductility, fracture energy, and cracking resistance of the composite are evidently improved. Microstructure analyses reveal that the high specific strength of carbon fibers and transfer of stress from matrix alloy to carbon fibers are responsible for the increase of the composite bending strength. The expanding of cracks is restrained, and cracking resistance of the composite is improved by adding woven carbon fiber. Attributed to the carbon fibers＇ debonding, cracks deflection, and multipath propagation mechanisms, the fracture energy of the composite increases.