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

Research output: Contribution to journalArticle

1 Citation (Scopus)

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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Aging of materials
Hardness
Composite materials
Age hardening
Alloying elements
Intermetallics
Reinforcement
Casting
Electron microscopes
Mechanical properties

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

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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.",
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Enhancement in Hardness and Influence of Artificial Aging on Stir Cast Al6061-B4C and Al6061-SiC Composites. / Gowri Shankar, M. C.; Shettar, Manjunath; Sharma, S. S.; Kini, Achutha; Jayashree.

In: Materials Today: Proceedings, Vol. 5, No. 1, 01.01.2018, p. 2435-2443.

Research output: Contribution to journalArticle

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AU - Kini, Achutha

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