Effect of Strontium on Mechanical Properties and Corrosion Resistance of AZ91D

Abstract:

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With adding 2% strontium in AZ91D, the ultimate tensile strength and the elongation increased by 10.3% and 55.3%, respectively. This is mainly caused by the refinement of the β phase and the formation of Al4Sr strengthening phase. Furthermore, with adding 2% strontium in AZ91D alloy, the weight loss corrosion rate in 5wt.% NaCl solution decreases to 0.048 mg·cm-2·d-1, which was 33.8 % of the AZ91D corrosion rate. Therefore, the mechanical properties and corrosion resistance of AZ91D could be improved by the addition of 2% strontium, which is due to the refinement of Mg17Al12 phase and the formation of Al4Sr phase.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

567-570

DOI:

10.4028/www.scientific.net/MSF.546-549.567

Citation:

Y. Fan et al., "Effect of Strontium on Mechanical Properties and Corrosion Resistance of AZ91D", Materials Science Forum, Vols. 546-549, pp. 567-570, 2007

Online since:

May 2007

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Price:

$35.00

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