(中南大学材料科学与工程学院， 长沙 410083)
摘 要: 综述了镁及镁合金阻尼特性的研究进展及阻尼镁合金材料的研究现状， 介绍了其阻尼性能的评价方法， 阐明了其阻尼机制符合G-L位错钉扎模型、 基面(0001)上的位错脱钉运动是造成镁合金在室温具有高应变振幅阻尼性能的主要原因， 概述了应变振幅、 温度、 变形工艺、 热处理、 晶粒尺寸和取向以及合金元素对镁合金阻尼性能的影响。
关键字: 镁合金; 阻尼性能; G-L模型; 位错
（School of Materials Science and Engineering,
Central South University, Changsha 410083, China）
Abstract: The research of damping capacity on magnesium and magnesium alloys and development of Mg-based damping materials were reviewed. Damping mechanism of the magnesium is mostly related to G-L dislocation model and the high damping capacity on strain amplitude is due to the pinned dislocation breakaway from the base plane (0001). Finally the effects of various factors including strain amplitude, temperature, deformation, heat treatment, grain size and grain orientation as well as alloy elements, on damping capacity were discussed.
Key words: magnesium alloys; damping capacity; G-L model; dislocation
