Tensile and Compressive Creep Behavior of Coarse-Grained Mg-Al-Sr Castings |
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| Journal | Materials Science Forum (Volumes 546 - 549) |
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| Volume | Progress in Light Metals, Aerospace Materials and Superconductors |
| Edited by | Yafang Han et al. |
| Pages | 171-174 |
| DOI | 10.4028/www.scientific.net/MSF.546-549.171 |
| Citation | Peng Zhao et al., 2007, Materials Science Forum, 546-549, 171 |
| Online since | May, 2007 |
| Authors | Peng Zhao, Qu Dong Wang, Chun Quan Zhai, Wen Jiang Ding |
| Keywords | Activation Energy, Creep, Magnesium Alloy, Stress Exponent, Strontium |
| Abstract | 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. |
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