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张文鑫,孙毅,许春香,张金山,贾庆功,宽军.Mg-3Zn-1Y-0.6Zr-0.5Ca生物镁合金不同速度挤压后组织性能研究[J].稀有金属材料与工程(英文),2019,48(7):2244~2250.[Zhang Wenxin,Sun Yi,Xu Chunxiang,Zhang Jinshan,Jia Qinggong and Kuan Jun.Microstructure and Properties of Mg-3Zn-1Y-0.6Zr-0.5Ca Bio-Magnesium Alloy Extruded at Different Speed[J].Rare Metal Materials and Engineering,2019,48(7):2244~2250.]
Microstructure and Properties of Mg-3Zn-1Y-0.6Zr-0.5Ca Bio-Magnesium Alloy Extruded at Different Speed
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Received:January 11, 2018  Revised:March 01, 2018
DOI:
Key words: extrusion speed  dynamic recrystallization  texture  microstructure  mechanical properties
Foundation item:国家自然科学基金(No.51574175,51474153)
Author NameAffiliation
Zhang Wenxin,Sun Yi,Xu Chunxiang,Zhang Jinshan,Jia Qinggong and Kuan Jun  
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Abstract:
      The Mg-3Zn-1Y-0.6Zr-0.5Ca bio-magnesium alloy was prepared by conventional casting method. The effect of the microstructures and mechanical properties of alloys extruded at different extrusion speeds (10, 30, 60 and 90 mm / min) was investigated. Results show that the size of dynamic recrystallization grains increases and the area of non-dynamic recrystallization decreases with increasing the extrusion speeds. Extrusion speeds affect the morphology and distribution of the precipitation, which affects the occurrence of dynamic recrystallization in turn. Texture decreases with increasing the extrusion speed. As the extrusion speed increases, the ductility of the alloy increases but the tensile strength decreases. The alloys exhibits excellent comprehensive performance, whose tensile strength and elongation are 270Mpa and 19.6% when the extrusion speed is 60mm/min.