Enhanced damping of a magnesium alloy by addition of copper
Enhanced damping of a magnesium alloy by addition of copper
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DOI：
10.1016/s0925-8388(02)01131-3
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发表时间：
2003-03
影响因子：
6.2
通讯作者：
N. Srikanth;Calvin He Gaofeng;M. Gupta
中科院分区：
文献类型：
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作者：
N. Srikanth;Calvin He Gaofeng;M. Gupta
成功地尝试了用铜等较硬的金属元素增强AZ91镁合金阻尼的新思路。研究了复合材料的阻尼性能与基体中铜的重量百分比之间的关系。结果表明，在AZ91基体中添加8.1%、15.5%和20.6% wt.%的铜，AZ91基体的整体阻尼能力分别提高了64%、78%和107%。特别强调了根据位错密度的增加和在基体-颗粒界面上存在塑性区来合理化阻尼的增加。
A new idea of using a stiffer metallic element, such as copper, to enhance the damping of AZ91 magnesium alloy is successfully attempted. The study focuses on the relationship between the damping capability of the composite with the weight percentage of copper added to the matrix. Results of this study show that addition of about 8.1, 15.5 and 20.6 wt.% of copper increases the overall damping capacity of the AZ91 matrix by 64%, 78% and 107%, respectively. Particular emphasis is placed on rationalizing the increase in damping in terms of the increase in dislocation density and presence of plastic zone at the matrix–particulate interface.