Tensile and Compressive Creep Behavior of Coarse-Grained Mg-Al-Sr Castings

Abstract:

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Tensile and compressive creep properties of Mg-5wt.%Al-1wt.%Sr alloy produced by gravity casting were investigated in this paper. Creep tests were carried out in the temperature range from 125 °C to 200 °C and stress range from 35 to 85MPa. The second creep rate in tension is significant different from that in compression, indicating that coarse-grained Mg-Al-Sr alloy exhibits tension/compression asymmetric behavior. Moreover, the activation energies and stress exponent in tension and compression are not the same, which suggest that creep mechanisms in tension and compression are different.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

171-174

DOI:

10.4028/www.scientific.net/MSF.546-549.171

Citation:

P. Zhao et al., "Tensile and Compressive Creep Behavior of Coarse-Grained Mg-Al-Sr Castings", Materials Science Forum, Vols. 546-549, pp. 171-174, 2007

Online since:

May 2007

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Price:

$35.00

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