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Dynamic mechanical analysis of prestrained Al2O3/Al metal-matrix composite

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Abstract

The effect of prestraining on the elastic modulus,E, and damping capacity, tanφ, of 10 and 20 vol% Al2O3 particle-reinforced composites has been investigated as function of temperature using dynamic mechanical analysis. Both elastic modulus and damping capacity were found to increase with volume fraction. At 10 vol% the modulus and damping were relatively insensitive to prestrain. However, at 20 vol% it was observed that the modulus decreased with increasing prestrain while damping increased significantly. These results are discussed in terms of fraction of broken particles, particle size, and differential in thermal expansion between the matrix and Al2O3 particulate.

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Authors and Affiliations

  1. Département de Génie Mécanique, École Polytechnique de Montréal, Montréal, Canada

    S. Elomari & R. Boukhili

  2. MC-21, Incorporated, 92121, San Diego, CA, USA

    M. D. Skibo

  3. École de Technologie Supérieure, Montréal, Canada

    J. Masounave

Authors
  1. S. Elomari
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  2. R. Boukhili
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  3. M. D. Skibo
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  4. J. Masounave
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Elomari, S., Boukhili, R., Skibo, M.D. et al. Dynamic mechanical analysis of prestrained Al2O3/Al metal-matrix composite. J Mater Sci 30, 3037–3044 (1995). https://doi.org/10.1007/BF01209214

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  • DOI: https://doi.org/10.1007/BF01209214

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