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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 410Aging Behaviors of Al 6061 and Al 6061/SiCp...

Aging Behaviors of Al 6061 and Al 6061/SiCp Composite

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Abstract:

In the present research the aging behavior of Al6061 alloy and Al6061/SiCp composite fabricated by powder metallurgy method was investigated. The solution treatment of the samples were carried out at 527°C for 2, 3and 4 h followed by aging at 180°C for different aging times between 1 and 10 h. The existence of SiC particles led to increasing the peak hardness of the composite. The peak hardness of the composite took place at shorter times than that of the 6061 alloy for the samples solution treated for 3and 4 h, but took place at longer times for the samples solution treated for 2 h. The optimum solution treating time was about 3 h for both the composite and the 6061 alloy that led to the fastest aging kinetics and the maximum hardness. At the solution treating time shorter than 3h due to incomplete dissolution of precipitates, the aging kinetics decelerated and the hardness values decreased. For the composites solution treated more than 3 h, hardness values decreased due to the grain growth of matrix while changing in the aging kinetics was not significant. EDS and SEM studies indicated the presence of bight enrichment zones including Mg and Si elements in the composite in solution treatment conditions.

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Periodical:

Advanced Materials Research (Volume 410)

Pages:

240-244

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.410.240

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Online since:

November 2011

Authors:

S.M.R. Ourang, A. Ekrami, S.M. Seyed Reihani, S.M.R.Mousavi Abarghouie

Keywords:

AA6061 Aluminum Alloy, Aging, Al Matrix Composite, Powder metallurgy

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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