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高阻尼铝合金层压板为五层铝合金的复合结构，中心为中等强度的４号防锈铝ＬＦ４（５０８３），两边对称地包覆高阻尼的Ｚｎ２２％Ａｌ（质量分数）共析合金，最外层包覆铝ＬＢ１（７０７２）作为保护层。通过测试层压板及其组成各单层在应变振幅Ａε＝５×１０－５下内耗随温度和频率的变化，得出层压板各层界面对内耗有一定贡献。在低温低应变振幅下，经淬火后的层压板内耗比淬火后在２５０℃进行断面加工率为６０％变形后的层压板内耗高。从ＴＥＭ照片分析，淬火后在２５０℃变形的层压板中锌铝合金的晶粒内含有大量位错，同时晶粒粗化，表明Ｚｎ２２％Ａｌ共析合金的高阻尼主要是由其晶粒界面粘滞滑动引起的，位错引起的弛豫作用小
High-damping aluminum alloy laminate is a five-layer aluminum alloy composite structure, the center is a medium-strength 4 rust-proof aluminum LF4 (5083), both sides symmetrically coated with high damping Zn 22% Al (mass fraction) , The outermost coating aluminum LB1 (7072) as a protective layer. By testing the variation of internal friction with temperature and frequency under the strain amplitude of Aε = 5 × 10-5, the results show that the interface of each layer of laminate has a certain contribution to internal friction. In the low temperature and low strain amplitude, after quenching the internal pressure than after quenching at 250 ℃ section processing rate of 60% deformation of the laminate after the high internal friction. From the TEM photo analysis, after quenching at 250 ℃ deformation of the zinc-aluminum alloy in the deformation of the grain contains a large number of dislocations, while the grain coarsening, indicating that 22% of Zn 22% Al eutectoid damping mainly by its crystal Viscous sliding interface caused by the grain, the relaxation caused by dislocation small