Effect of Deformation on the Damping Capacity of Magnesium Alloys

Abstract:

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Equal channel angular extrusion (ECAE) was applied to an as-cast AZ91D magnesium alloy. The strain amplitude dependence and temperature dependence of damping capacities of the as-cast and ECAE processed AZ91D alloys were investigated by dynamic mechanical analyzer (DMA). Microstructures of AZ91D alloys after ECAE were observed by optical microscopy (OM). In higher strain region, the damping value of 4-pass ECAE deformed AZ91D alloy was the highest among all the AZ91D alloys under different conditions. The damping peaks of ECAE deformed AZ91D alloys detected during heating from room temperature to 400°C were considered to be related to the migration of grain boundaries and the movement of dislocations during recrystallization.

Info:

Periodical:

Materials Science Forum (Volumes 488-489)

Edited by:

W.Ke, E.H.Han, Y.F.Han, K.Kainer and A.A.Luo

Pages:

737-740

DOI:

10.4028/www.scientific.net/MSF.488-489.737

Citation:

X. S. Hu et al., "Effect of Deformation on the Damping Capacity of Magnesium Alloys", Materials Science Forum, Vols. 488-489, pp. 737-740, 2005

Online since:

July 2005

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Price:

$35.00

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