Influence of Precipitate Phase on the Strain Rate Sensitivity of Mg-Gd-Y Alloy

Abstract:

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Supersaturated Mg-Gd-Y alloy followed by aging at 225 °C with different times were subjected to quais-static and dynamic strain rates to determine the influence of precipitate phase β′ on the strain rate sensitivity of magnesium alloy. Strain rate sensitivity (SRS) decreases with the increase of the size of β′. SRS decreases from initial condition to peak-aged condition due to the β′ increases the athermal component of flow stress. On the other hand, the influence of precipitate interfaces on dislocation generation and storage mechanisms may be responsible for the decrease of SRS from peak-aged to over-aged condition.

Info:

Periodical:

Advanced Materials Research (Volumes 311-313)

Edited by:

Zhongning Guo

Pages:

792-797

DOI:

10.4028/www.scientific.net/AMR.311-313.792

Citation:

F. Zhang et al., "Influence of Precipitate Phase on the Strain Rate Sensitivity of Mg-Gd-Y Alloy", Advanced Materials Research, Vols. 311-313, pp. 792-797, 2011

Online since:

August 2011

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$35.00

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