挤压Mg-12Zn-1.5Er镁合金的微观组织演变及力学性能
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Published in | 中国有色金属学报:英文版 Vol. 21; no. 4; pp. 874 - 879 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
2011
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Subjects | |
Online Access | Get full text |
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Bibliography: | The microstructure and mechanical properties of the cast and extruded Mg-12Zn-1.5Er alloys were investigated. The I-phase observed in the cast Mg-12Zn-1.5Er alloy was broken during hot extrusion. The microstructure of the alloy was refined due to the dynamic recrystallization, and the equiaxed grains have size in the range of 2 5 μm. Moreover, a great deal of nano-scale particles precipitate in the recrystallized grains. Compared with the cast one, the extruded alloy shows a great improvement on the mechanical properties as the result of refined microstructure, the dispersed I-phase and the fine precipitates. The ultimate tensile strength and the yield tensile strength of this extruded alloy are 359 and 318 MPa, respectively. WANG Qing-feng, LI Han, LI Shu-bo, WANG Zhao-hui, DU Wen-bo School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China 43-1239/TG Mg-Zn-Er alloy; extrusion; microstructure; mechanical property |
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ISSN: | 1003-6326 |