Hardness and Corrosion Behavior of Aged 6063 Al Alloy

Chun Lin He; Xiao Dan Meng; Guo Feng Ma; Jian Ming Wang; Zhao Fu Du; Dong Liang Zhao

doi:10.4028/www.scientific.net/AMR.1046.54

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1046Hardness and Corrosion Behavior of Aged 6063 Al...

Hardness and Corrosion Behavior of Aged 6063 Al Alloy

Abstract:

The effect of artificial aging on the corrosion properties of 6063 Al alloy was investigated by optical microscope, field emission scanning electron microscope (FE-SEM) and accelerated corrosion test. Accelerated corrosion test revealed that the corrosion resistance of the alloy strongly depended on artificial aging times, and the corrosion weight gain curve of the aged alloy was greatly in agreement with that of hardness vs. aging times, showing that the lowest corrosion resistance was exhibited at peak aged condition. It is found that pitting is the main corrosion form for the 6063 aluminum alloy aged with different times at 210°C, and slight intergranular corrosion is also found at peak hardness. It is believed that pitting results from galvanic corrosion between Al₉Fe₂Si₂ particles and matrix Al while intergranular corrosion results from galvanic corrosion between Mg₂Si and matrix Al.

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Periodical:

Advanced Materials Research (Volume 1046)

Pages:

54-57

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1046.54

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Online since:

October 2014

Authors:

Chun Lin He*, Xiao Dan Meng, Guo Feng Ma, Jian Ming Wang, Zhao Fu Du, Dong Liang Zhao

Keywords:

Aluminum (Al), Artificial Aging, Corrosion

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