Effects of Extrusion on the Mechanical Properties and Damping Capacity of Mg-1.8Cu-0.5Mn Alloy
Effects of Extrusion on the Mechanical Properties and Damping Capacity of Mg-1.8Cu-0.5Mn Alloy
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DOI：
10.4028/www.scientific.net/msf.546-549.257
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发表时间：
2007-05
期刊：
影响因子：
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通讯作者：
Zhen Yan Zhang;L. Peng;Xiaoqin Zeng;Lin Du;Lan Ma;W. Ding
中科院分区：
文献类型：
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作者：
Zhen Yan Zhang;L. Peng;Xiaoqin Zeng;Lin Du;Lan Ma;W. Ding
挤压对Mg-1.8wt.%力学性能和阻尼性能的影响铜-0.5wt.% Mn（MCM 1805）合金。采用拉伸试验和动态力学分析仪分别研究了MCM 1805合金铸态和挤压态的室温拉伸性能和阻尼性能。利用光学显微镜、X射线衍射仪、扫描电子显微镜和能谱仪对试样的微观结构进行了研究。采用Granato-Lücke模型解释了挤压对MCM 1805合金阻尼性能的影响。结果表明：挤压使MCM 1805合金的晶粒尺寸显著减小，但对合金的相组成和溶质原子浓度影响不大，晶粒细化是MCM 1805合金拉伸性能显著提高和内耗降低的主要原因。
Effects of extrusion on mechanical properties and damping capacity of Mg-1.8wt.%Cu -0.5wt.%Mn (MCM1805) alloy have been investigated. Tensile tests and dynamic mechanical analyzer were respectively used to measure tensile properties and damping capacity at room temperature of as-cast and as-extruded MCM1805 alloy. The microstructure was studied using optical microscope, X-ray diffraction and scanning electron microscope with an energy dispersive X-ray spectrometer. Granato-Lücke model was used to explain the influences of extrusion on damping capacity of MCM1805 alloy. The results showed that extrusion dramatically decreases the grain size but has little influence on phase composition and solute atoms concentration of MCM1805 alloy, and the grain refinement was the dominant reason for the obvious increase of tensile properties and decrease of internal friction of MCM1805 alloy.