Microstructure and Fracture behavior of two stage stir cast Al6061-SiC composites

Gowri Shankar, M C and Sharma, S S and Kini, Achutha U (2016) Microstructure and Fracture behavior of two stage stir cast Al6061-SiC composites. In: Manipal Research Colloquium, Manipal, 04/04/2016, Manipal.

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Abstract

Improvement in mechanical properties due to the presence of SiC reinforced particles with an average size of 35-40μm and various weight percentage of (2,4 and 6) on the hardness and fracture behavior of Al6061-SiC composite is investigated. Composites are produced by two stage stir casting process. The influence of artificial aging with different aging temperatures on the mechanical properties was also assessed. Microstructure studies, macro hardness and mechanism of fracture behavior during tensile test have been discussed. Failure mode of fracture surface is studied to determine the parameters which influence the crack growth characteristics. Addition of SiC (2-6% wt.) particles and artificially aging at 100ᴼC for Al6061-SiC composite shows improvement in hardness by 150% and tensile strength by 75% due to the precipitation of finer secondary intermetallic phases of alloying elements. Fracture surface analysis for composite shows particle interface fracture and void nucleation growth failure

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Al6061 alloy, Aging, Composite, Microstructure, Stir casting
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 29 Jun 2016 09:52
Last Modified: 29 Jun 2016 09:52
URI: http://eprints.manipal.edu/id/eprint/146426

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