(中南大學(xué)材料科學(xué)與工程學(xué)院， 長沙 410083)
摘 要: 綜述了鎂及鎂合金阻尼特性的研究進(jìn)展及阻尼鎂合金材料的研究現(xiàn)狀， 介紹了其阻尼性能的評價方法， 闡明了其阻尼機(jī)制符合G-L位錯釘扎模型、 基面(0001)上的位錯脫釘運(yùn)動是造成鎂合金在室溫具有高應(yīng)變振幅阻尼性能的主要原因， 概述了應(yīng)變振幅、 溫度、 變形工藝、 熱處理、 晶粒尺寸和取向以及合金元素對鎂合金阻尼性能的影響。
關(guān)鍵字: 鎂合金; 阻尼性能; G-L模型; 位錯
（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
