Tensile Fractography of Artificially Aged Al6061-B4C Composites

Gowri Shankar, M C and Kini, Achutha U and Sharma, S S (2017) Tensile Fractography of Artificially Aged Al6061-B4C Composites. In: International conference on mechanical and aeronautical engineering, 18/01/2017, Bangkok, Thailand, Jan 18-19, 2017.

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Abstract

Presence of various amount of (2, 4 & 6% wt.) B4C reinforcement in Al6061 alloy on the hardness and tensile behaviour is studied in the present work. The influence of artificial aging on the mechanical properties is also assessed. Brinell macro hardness and mechanism of tensile fracture behaviour have been discussed. Fracture surface is studied to determine the parameters which influence the crack growth and failure characteristics. Lower temperature aging and content of B4C particles shows improvement in hardness by 170% and tensile strength by 90%. It is due to the precipitation of finer secondary solute rich intermetallic phases of alloying elements. Fracture surface analysis for composite shows mixed mode fracture and void nucleation growth failure

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Metal Matrix Composites (AMMC’s), Boron carbide, Stir casting, Aging, Microstructure
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 08 Feb 2017 10:04
Last Modified: 08 Feb 2017 10:04
URI: http://eprints.manipal.edu/id/eprint/148278

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