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ZHANG Zhongming, HU Bo, GAO Fengtao, et al. Room-temperature damping capacity of Al2O3P/Al composites prepared by reciprocating extrusion[J]. Acta Materiae Compositae Sinica, 2011, 28(4): 130-135.
Citation: ZHANG Zhongming, HU Bo, GAO Fengtao, et al. Room-temperature damping capacity of Al2O3P/Al composites prepared by reciprocating extrusion[J]. Acta Materiae Compositae Sinica, 2011, 28(4): 130-135.
shu

Room-temperature damping capacity of Al2O3P/Al composites prepared by reciprocating extrusion

  • 1.

    School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China;

  • 2.

    State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China

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  • Received Date: July 10, 2010
  • Revised Date: February 11, 2011
    Abstract
  • Al2O3/Al composites of different volume fractions were produced by using reciprocating extrusion technology with pure Al powder and Al2O3 particle. Then the damping capacity of the composites was measured. Relationship of damping behavior and strain amplitude or frequency, and the contribution of different content of reinforced particles to damping capacity were investigated. The result shows that the Al2O3 particles homogeneously distributed in Al matrix, and the Al2O3P/Al composite prepared by reciprocating extrusion has an excellent damping capacity. The damping property improves with increase of the particles content. At low strain amplitude, the main damping mechanism of Al2O3P/Al composites is dislocation damping, whereas at high strain amplitude, interface-sliding damping becomes the main damping mechanism.
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