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Effects of microstructure of the behavior of an aluminum alloy and an aluminum matrix composite tested under low levels of superimposed hydrostatic pressure

  • Mechanical Behavior
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Abstract

Experiments have been conducted on an aluminum alloy and an aluminum matrix composite tested in tension under the influence of superimposed hydrostatic pressure. Monolithic alloys heat-treated to underaged (UA) and overaged (OA) conditions exhibited significant differences in their responses to the superimposition of hydrostatic pressure during tension testing. Significant increases in ductility were obtained with moderate increases in confining pressure for the OA alloy, while the UA alloy exhibited little effect of pressure. In contrast, significant increases in ductility were obtained for the composites, regardless of the matrix aging condition. The effects of pressure on frature are determined in light of the micromechanisms of fracture in these materials.

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Authors and Affiliations

  1. Department of Materials science and Engineering, Case Western Reserve University, 44106, Cleveland, OH

    D. S. Liu (Graduate Student), M. Manoharan (Research Associate) & J. J. Lewandowski (Associate Professor)

Authors
  1. D. S. Liu
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  2. M. Manoharan
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  3. J. J. Lewandowski
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Liu, D.S., Manoharan, M. & Lewandowski, J.J. Effects of microstructure of the behavior of an aluminum alloy and an aluminum matrix composite tested under low levels of superimposed hydrostatic pressure. Metall Trans A 20, 2409–2417 (1989). https://doi.org/10.1007/BF02666676

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