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J. Compos. Sci.
Volume 7
Issue 3
10.3390/jcs7030091
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Article

Individual and Combined Effects of Reinforcements on Fractured Surface of Artificially Aged Al6061 Hybrid Composites

by
Manjunath Shettar
,
Sathyashankara Sharma
,
Gowrishankar M C
*,
Vishwanatha H M
,
Rakesh Ranjan
and
Srinivas Doddapaneni
Department of Mechanical and Industrial Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, India
*
Author to whom correspondence should be addressed.
J. Compos. Sci. 2023, 7(3), 91; https://doi.org/10.3390/jcs7030091
Submission received: 30 January 2023 / Revised: 17 February 2023 / Accepted: 28 February 2023 / Published: 1 March 2023
(This article belongs to the Special Issue Advanced Polymeric Composites and Hybrid Materials)
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Abstract

The present work mainly focuses on a comparative study of the individual and combined effect of reinforcements on tensile strength and fracture surface analysis of Al6061 alloy and its composites during artificial aging. SiC and B4C are the two reinforcements used in the present work for the preparation of Al6061 composites by the stir casting process, and the reinforcement percentage from 2, 4, and 6 wt.% varied. Both Al6061 alloy and its composites are solution-treated at 558 °C/2 h and artificially aged at 100 and 200 °C for different time intervals to achieve peak aging. The results show substantial improvement in ultimate tensile strength during low temperature aging at 100 °C. Approximately 80–110% increase in UTS value is observed in both individual and hybrid composites compared to Al6061 alloy. The mechanism of failure governing the tensile strength for both alloy and its composites is thoroughly analyzed and discussed using a scanning electron microscope. The morphology of crack propagation is also studied to determine the mechanism of failure. Al6061 alloy shows ductile failure due to coarser dimples. Al6061-SiC composites show particle-matrix interface cracking and shear failure. Al6061-B4C composites show elongated dimple rupture mode of failure, whereas Al6061-SiC + B4C hybrid composites fail due to nucleation growth and mixed fracture mode.
Keywords: Al6061 alloy; boron carbide (B4C); silicon carbide (SiC); hybrid composites; fractography Al6061 alloy; boron carbide (B4C); silicon carbide (SiC); hybrid composites; fractography

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MDPI and ACS Style

Shettar, M.; Sharma, S.; M C, G.; H M, V.; Ranjan, R.; Doddapaneni, S. Individual and Combined Effects of Reinforcements on Fractured Surface of Artificially Aged Al6061 Hybrid Composites. J. Compos. Sci. 2023, 7, 91. https://doi.org/10.3390/jcs7030091

AMA Style

Shettar M, Sharma S, M C G, H M V, Ranjan R, Doddapaneni S. Individual and Combined Effects of Reinforcements on Fractured Surface of Artificially Aged Al6061 Hybrid Composites. Journal of Composites Science. 2023; 7(3):91. https://doi.org/10.3390/jcs7030091

Chicago/Turabian Style

Shettar, Manjunath, Sathyashankara Sharma, Gowrishankar M C, Vishwanatha H M, Rakesh Ranjan, and Srinivas Doddapaneni. 2023. "Individual and Combined Effects of Reinforcements on Fractured Surface of Artificially Aged Al6061 Hybrid Composites" Journal of Composites Science 7, no. 3: 91. https://doi.org/10.3390/jcs7030091

APA Style

Shettar, M., Sharma, S., M C, G., H M, V., Ranjan, R., & Doddapaneni, S. (2023). Individual and Combined Effects of Reinforcements on Fractured Surface of Artificially Aged Al6061 Hybrid Composites. Journal of Composites Science, 7(3), 91. https://doi.org/10.3390/jcs7030091

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