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| Microstructure and Mechanical Properties of GW102 Magnesium Alloy in Different Extrusion Directions |
| CHEN Qingrong1 YANG Zhong1 LI Jianping1* WU Yongxing2 LIU Jilin2 YANG Zhiling3 |
1. School of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021
2. PLA Representative Office in Factory No.616, Datong 037036
3. Foundry of North General Power Group Co., Ltd., Datong 037036 |
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Cite this article:
CHEN Qingrong, YANG Zhong, LI Jianping1*WU Yongxing2, LIU Jilin, YANG Zhiling. Microstructure and Mechanical Properties of GW102 Magnesium Alloy in Different Extrusion Directions. Chinese Journal of Materials Research, 2013, 27(3): 317-325.
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Abstract The microstructure and mechanical properties in different extrusion directions of Mg-9.8Gd-1.6Y-0.02Zn-0.5Zr(GW102 alloy) bar were investigated by optical microscope (OM), scanning electron microscope (SEM) and transmission electron microscope (TEM).The results show that the microstructure of GW102 alloy mainly consist of supersaturated solid solution, a few particle Mg5(Y0.6Gd0.4) phase and non-equilibrium phases Mg3(Gd0.5, Y0.5).The β″ and β′ phases formed after aging treatment at 200 ℃ for 60 h. The anisotropy is obvious in this magnesium alloy. The tensile strength and elongation in vertical direction of extrusion state after aging treatment was significantly lower than that in extrusion direction at room temperature. The interaction of LPSO and dislocations and the precipitates-free zone(PFZ) appeared in the grain boundary were investigated, whose influence on mechanical properties of GW102 alloy was discussed.
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Received: 07 March 2013
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| About author: *To whom correspondence should be addressed, Tel: 029(83208080), E-mail: jpli01@xatu.edu.cn |
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