Enhancement in Hardness and Influence of Artificial Aging on Stir Cast Al6061-B4C and Al6061-SiC Composites

M. C. Gowri Shankar, Manjunath Shettar, S. S. Sharma, Achutha Kini, Jayashree

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Abstract

Present investigation focusses on individual effect of B4C and SiC on the improvement in hardness with an average size of 35-40μm and various weight percentage of (2, 4 and 6) Al6061 alloy composite. Composites are produced by stir casting process. The precipitation hardening effect at 100, 150 and 200°C on the mechanical properties was also investigated. Optical micrographs and Brinel hardness number have been discussed. Transmission electron microscope shows precipitation of finer inter-metallic in both Al6061 alloy and its composites. Increase in percentage of both B4C and SiC reinforcement from 2-6% wt. and artificially aged at 100°C shows enhancement in hardness by 150-175% due to the precipitation of intermetallic phases of alloying elements. Al6061-B4C composites show improvement in hardness as compared to Al6061-SiC composites.

Original languageEnglish
Pages (from-to)2435-2443
Number of pages9
JournalMaterials Today: Proceedings
Volume5
Issue number1
DOIs
Publication statusPublished - 01-01-2018

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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