Tensile Fractography of Artificially Aged Al6061-SiC+B4C Hybrid Composites

Sathyashankara Sharma; M.C. Gowrishankar; Pavan Hiremath; Manjunath Shettar; B.M. Gurumurthy

doi:10.4028/www.scientific.net/MSF.995.3

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Tensile Fractography of Artificially Aged Al6061-SiC+B₄C Hybrid Composites
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HomeMaterials Science ForumMaterials Science Forum Vol. 995Tensile Fractography of Artificially Aged...

Tensile Fractography of Artificially Aged Al6061-SiC+B₄C Hybrid Composites

Abstract:

In the current work Al6061 hybrid composites reinforced with Silicon Carbide (SiC) and Boron Carbide (B₄C) were studied for improvement in hardness and behavior of fracture surface after artificial aging. It was found that after aging at 100 and 200 OC, presence of SiC and B₄C particles in the Hybrid Al6061 Matrix Composites showed substantial improvement in hardness compared to that of the base alloy. Behavior of fracture mechanism after tensile strength have been discussed to conclude the factors which impact the mechanism of crack growth. Presence of SiC and B₄C reinforcement particulates and artificially aged at 100°C for Al6061-SiC+ B₄C hybrid metal matrix composite shows enhancement in hardness by 180% and tensile strength by 80% due to the presence of finer secondary solute rich intermetallic phases of alloying elements. Fractography analysis displays particle interface failure and combination of brittle and ductile mode of failure.

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Materials Science Forum (Volume 995)

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3-8

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https://doi.org/10.4028/www.scientific.net/MSF.995.3

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June 2020

Authors:

Sathyashankara Sharma, M.C. Gowrishankar*, Pavan Hiremath, Manjunath Shettar, B.M. Gurumurthy

Keywords:

Al6061 Alloy, Boron Carbide, Fractography, Hybrid Composites, Silicon Carbide

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