Recovery Behaviour at the Inter-Alloy Region of a Cold Rolled Clad Aluminum Alloy

Debartha Bag; Bradley J. Diak; Hai Ou Jin

doi:10.4028/www.scientific.net/AMR.409.23

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 409Recovery Behaviour at the Inter-Alloy Region of a...

Recovery Behaviour at the Inter-Alloy Region of a Cold Rolled Clad Aluminum Alloy

Abstract:

This study examines the recovery behaviour of the inter-alloy region between a core AA6XXX clad with AA3003 after 72% rolling reduction. Sample coupons were heated isochronally or isothermally, at different temperatures or times, respectively, to probe the recovery kinetics of x-ray peak broadening, x-ray macro-texture, and micro-hardness from the cold rolled state. The inter-alloy region had a strong β-fibre typical of rolled Al. The recovery of the {220} and {311} x-ray line profiles were observed between anneals. The full width half maximum was determined from a pseudo-Voigt fit of the profiles to obtain the defect-related information. Distinct changes in the peak shape and microhardness were observed above 80°C (start of recovery), which goes on all the way to 300°C due to recovery, and beyond 300°C both hardness and peak width drop rapidly (recrystallization start), the latter behaviour being closer to AA3004. Modified Williamson-Hall analysis confirms that recovery is due to dislocation annihilation.

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Advanced Materials Research (Volume 409)

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23-28

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https://doi.org/10.4028/www.scientific.net/AMR.409.23

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Online since:

November 2011

Authors:

Debartha Bag, Bradley J. Diak, Hai Ou Jin

Keywords:

AA3003, AA6xxx, Fusion, Recovery, Texture, X-Ray Profile Analysis

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