Improved mechanical properties in friction stir processed carbon fiber reinforced aluminum composites

doi:10.16511/j.cnki.qhdxxb.2017.22.039

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Abstract Aluminum alloys are important light metals for weight reduction in cars and aircrafts. However, aluminum alloy applications are limited when the aluminum alloy strength is not sufficient. The mechanical properties of Al5052 can be improved by using carbon fiber reinforced aluminum composites fabricated using multiple-pass friction stir processing (FSP). The mechanical properties and microstructures of the composites are investigated with the composite having 18.9% higher tensile strength and 19.7% higher elongation rate than the matrix. The microstructure observation indicates that the carbon fibers are uniformly dispersed in the matrix. Fractography results show pulled-out carbon fibers in the inner surfaces of dimples. The strengthening of the composites is due to load transfer to the homogeneous carbon fibers.

Keywords aluminum matrix composite carbon fiber friction stir processing mechanical properties

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TB333

Issue Date: 15 August 2017

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	SHI Qingyu
	CAO Xiong
	LI Jiyuan
	CHEN Gaoqiang
	LIU Qu

Cite this article:

SHI Qingyu,CAO Xiong,LI Jiyuan, et al. Improved mechanical properties in friction stir processed carbon fiber reinforced aluminum composites[J]. Journal of Tsinghua University(Science and Technology), 2017, 57(8): 792-797.

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http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2017.22.039 OR http://jst.tsinghuajournals.com/EN/Y2017/V57/I8/792

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