Mg对建筑幕墙用铝合金显微结构和阻尼性能的影响

Effects of Mg on Microstructures and Damping Properties of Aluminum Alloy Used in Curtain Wall

研究了Mg含量对建筑幕墙用铝合金Al-0.5Si-0.2V-x Mg(x=0.20,0.35,0.50,0.65,0.80)显微结构和阻尼性能的影响。结果表明,该合金均由α-Al相和Mg2Si相组成。随Mg含量的增加,Mg2Si相的衍射峰强度逐渐增强,合金中第二相由点状弥散分布逐渐变为网状分布。当Mg含量为0.5%时,该合金具有最佳的阻尼性能。

The effect of Mg on the microstructures and damping properties of the aluminum alloy Al-0.5Si-0.2V-xMg （x= 0.20, 0.35, 0.50, 0.65, 0.80） used in curtain wall was investigated. The results show that the alloys are made up of the phases of α-Al and Mg2Si. The diffraction peak intensity of Mg2Si phase increases gradually with the increase of the Mg content, and the distribution of the second phase of the alloy changes from dot to reticular. The alloy has the best damping performance when the Mg content is 0.5 %.