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Precipitation Behavior, Texture and Mechanical Properties of AZ80 Magnesium Alloy Produced by Equal Channel
Angular Extrusion |
| LI Xiao1; YANG Ping1; LI Jizhong2; DING Hua2 |
1.School of Materials Science and Engineering; University of Science and Technology Beijing; Beijing 100083
2.School of Materials and Metallurgy; Northeastern University; Shenyang 110004 |
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Cite this article:
LI Xiao YANG Ping LI Jizhong DING Hua. Precipitation Behavior, Texture and Mechanical Properties of AZ80 Magnesium Alloy Produced by Equal Channel
Angular Extrusion. Chin J Mater Res, 2010, 24(1): 1-9.
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Abstract AZ80 magnesium alloy was subjected to ECAP (equal channel angular extrusion) processing at 300. The evolution of microstructure, texture and mechanical properties influenced by the precipitation was investigated. The results show that ECAP processing significantly favored granular–like Mg17Al12 continuous precipitation in accompany with reducing time effectively during subsequent aging treatment; basal texture can be obtained via route A after ECAP with multi passes, whereas typical shear texture with most basal planes parallel to the shear plane of mode in route Bc; however the precipitation has not remarkable effect on the texture development during ECAP. A relative low ultimate tensile strength of 300 MPa and an improved elongation of 19% were obtained in the processed samples due to strong texture and coarse precipitates. Further optimization should be made by means of impeding the precipitation of the coarse particles before ECAP and decreasing the number of pass and pressing temperature.
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Received: 29 July 2009
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| Fund: Supported by National Natural Science Foundation of China No.50571009. |
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