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Fabrication and Mechanical Behavior of Al_2O_3/TiC/Ni Graded Laminates with Surface Compressive Stresses(Materials, Metallurgy & Weldability)

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Abstract

Symmetrically graded laminates of the Al_2O_3/TiC/Ni/TiC/Al_2O_3 were fabricated by SHS/HIP process. Compressive residual stresses as high as 100〜300MPa were introduced into the outer Al_2O_3 layers by utilizing the thermal expansion mismatch between the outer and inner layers. The effect of the surface compressive residual stress on the strength and toughness of Al_2O_3 was evaluated by three point bending tests and the Vicker's indentation method. The results showed that the surface compressive stress can effectively improve the strength and toughness of the ceramic laminates.

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Details

  • CRID
    1571698602232010880
  • NII Article ID
    110006486008
  • NII Book ID
    AA00867058
  • ISSN
    03874508
  • Text Lang
    en
  • Data Source
    • CiNii Articles

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