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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Bibliographic Details
Published in中国有色金属学报：英文版 Vol. 21; no. 4; pp. 874 - 879
Main Author 王庆峰 李晗 李淑波 王朝辉 杜文博
Format Journal Article
LanguageEnglish
Published 2011
Subjects
Mg-Zn-Er合金
力学性能
微观组织
挤压
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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
ISSN:1003-6326