Effect of loading on recovery of internal friction of Al-16 wt pct Ag and Al-16 wt pct Ag-0.28 wt pct Fe alloys

The phenomenon of internal friction recovery of Al-16 wt pct Ag and Al-16 wt pct Ag-0.28 wt pct Fe alloys is studied after cold-working the samples in uniaxial tension using the free decay method. The wire samples are investigated for internal friction recovery while they were loaded, within the ela...

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Bibliographic Details
Published in:Journal of materials science 2001-03, Vol.36 (6), p.1507-1512
Main Authors: Graiss, G, Mahmoud, M A
Format: Article
Language:English
Online Access:Get full text
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Summary:The phenomenon of internal friction recovery of Al-16 wt pct Ag and Al-16 wt pct Ag-0.28 wt pct Fe alloys is studied after cold-working the samples in uniaxial tension using the free decay method. The wire samples are investigated for internal friction recovery while they were loaded, within the elastic limit, by different loads at different resting temperatures. It is found that, by increasing the temporary loading, the rate of recovery decreases. TEM investigations confirmed that the addition of Fe to Al-Ag alloy accelerates the formation and coarsening of GP zones. The results are explained on the basis of dislocation damping adopting the Granato-Luecke model for recovery of internal friction. (Author)
ISSN:0022-2461