Effect of Strontium on Mechanical Properties and Corrosion Resistance of AZ91D

Abstract:

Article Preview

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

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

Export:

Price:

$38.00

[1] G. Song, A. Atrens, D. Stjohn, J. Nairn, Y. Li, Corros. Sci. 39(1997)855-875.

[2] S. Mathieu, C. Rapin, J. Steinmerz, P. Steinmetz. Corros. Sci. 45(2003)2741-2755.

[3] R. Ambat, N.N. Aung, W. Zhou, Corros. Sci. 42(2000)1433-1455.

[4] Pekguleryuz, Mihriban O�Baril Eric TMS Annual Meeting (2001)119-125.

[5] G.L. Makar, J. Kruger, A. Joshi, in: H.G. Paris, W. H. Hunt(Rds. ). Advances in Magnesium Alloys and composites, TMS, (1988).