Damping Behavior of Macroscopic Graphite Particulates Reinforced Copper Metal Matrix Composites（Gr/Cu-MMCs）

Wang Jinxiang1; Chen Kai2; Peng Xiaobo2

doi:10.15980/j.tzzz.2012.07.012

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Damping Behavior of Macroscopic Graphite Particulates Reinforced Copper Metal Matrix Composites（Gr/Cu-MMCs）
Vol. 32, Issue 7, Pages: 601-603(2012)
Published： 2012 ，
DOI： 10.15980/j.tzzz.2012.07.012

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[1]王金香,陈凯,彭小波.Gr/Cu复合材料的阻尼行为[J].特种铸造及有色合金,2012,32(07):601-603.

Wang Jinxiang1, Chen Kai2, Peng Xiaobo2. Damping Behavior of Macroscopic Graphite Particulates Reinforced Copper Metal Matrix Composites（Gr/Cu-MMCs）. [J]. Special Casting & Nonferrous Alloys 32(7):601-603(2012)
[1]王金香,陈凯,彭小波.Gr/Cu复合材料的阻尼行为[J].特种铸造及有色合金,2012,32(07):601-603. DOI： 10.15980/j.tzzz.2012.07.012.

Wang Jinxiang1, Chen Kai2, Peng Xiaobo2. Damping Behavior of Macroscopic Graphite Particulates Reinforced Copper Metal Matrix Composites（Gr/Cu-MMCs）. [J]. Special Casting & Nonferrous Alloys 32(7):601-603(2012) DOI： 10.15980/j.tzzz.2012.07.012.

摘要

通过内耗测量法研究了石墨颗粒增强Cu基复合材料（Gr/Cu-MMCs）的阻尼行为

并结合微观结构进行分析

讨论了复合材料阻尼性能提高的机理。结果表明

石墨颗粒的引入提高了复合材料的阻尼能力

且随石墨颗粒体积分数的增加而增加。除了本征阻尼对复合材料有影响外

位错阻尼及界面阻尼是材料获得高阻尼性能的重要机制。

Abstract

The damping behavior of graphite particulates reinforced copper metal matrix composites Gr/Cu-MMCs was investigated by measuring internal friction（IF）

and based on the IF testing results and microstructure observation

the mechanism of improving damping behavior in Gr/Cu-MMCs was presented.The results show that damping performance of the composite can be increased with the introduction of macro-graphite particulates

and it is increased with the increase of volume fraction of graphite particulate.Besides of intrinsic damping

the dislocation damping and interface damping play the controlled role in improving the damping behavior.