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

doi:10.1016/j.matpr.2017.11.023

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

^*Corresponding author for this work

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

9 Citations (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 language	English
Pages (from-to)	2435-2443
Number of pages	9
Journal	Materials Today: Proceedings
Volume	5
Issue number	1
DOIs	https://doi.org/10.1016/j.matpr.2017.11.023
Publication status	Published - 01-01-2018

All Science Journal Classification (ASJC) codes

General Materials Science

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10.1016/j.matpr.2017.11.023

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

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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AU - Gowri Shankar, M. C.

AU - Shettar, Manjunath

AU - Sharma, S. S.

AU - Kini, Achutha

AU - Jayashree, null

PY - 2018/1/1

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AB - 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

Abstract

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