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Influence of SiCp Addition on the Microstructure, Ageing Response and Mechanical Properties of Aluminum Matrix Composites

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Abstract:

In this study, monolithic samples and 3% SiCp/6061 composite samples were fabricated using spark plasma sintering. A comparative analysis of the microstructure, ageing response, and mechanical properties of these materials revealed that the addition of SiCp induced thermal mismatch dislocations, which accelerated the ageing kinetics. As a result, the time required to reach peak ageing decreased from 8.5 hours to 8 hours, and the peak ageing hardness increased from 102.7 HV to 113.5 HV. The tensile strength of the peak-aged composite sample improved from 315.5 MPa to 352.4 MPa, while the elongation decreased from 11.8% to 8.8%. These findings provide valuable insights for optimizing the properties of the composite, ultimately enhancing its performance and applicability in demanding engineering applications.

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Periodical:

Materials Science Forum (Volume 1195)

Pages:

151-155

DOI:

https://doi.org/10.4028/p-XlFWK8

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Online since:

June 2026

Authors:

Lin Zeng*, Kenjiro Sugio, Gen Sasaki

Keywords:

3%SiCp/6061 Composites, Ageing Response, Mechanical Properties, Microstructure

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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