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Effect of volume fraction and geometry of pores on mechanical properties of porous bulk glassy Pd42.5Cu30Ni7.5P20 alloys

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Abstract

Porous Pd42.5Cu30Ni7.5P20 bulk glassy alloy rods with porosities up to 71% were successfully prepared by water quenching in a 15 MPa hydrogen atmosphere, followed by heat treatment in a supercooled liquid state. Pores with sizes up to 80 μm were homogeneously distributed over the whole cross-sectional area. Under compressive deformation, the porous alloys with porosities exceeding 41% did not show macroscopic fracture in a wide compressive strain range up to 0.6. Mechanical tests with porous alloy rods whose pores are anisotropically oriented indicate that the plasticity of the porous alloy is strongly affected by stress concentration factor.

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Authors and Affiliations

  1. Department of Materials Science, Graduate School of Engineering, Tohoku University, Aoba-ku, Sendai, 980-8577, Japan

    Takeshi Wada & Makoto Kinaka

  2. Institute for Materials Research, Tohoku University, Aoba-ku, Sendai, 980-8577, Japan

    Akihisa Inoue

Authors
  1. Takeshi Wada
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  2. Makoto Kinaka
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  3. Akihisa Inoue
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Correspondence to Takeshi Wada.

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Wada, T., Kinaka, M. & Inoue, A. Effect of volume fraction and geometry of pores on mechanical properties of porous bulk glassy Pd42.5Cu30Ni7.5P20 alloys. Journal of Materials Research 21, 1041–1047 (2006). https://doi.org/10.1557/jmr.2006.0127

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  • DOI: https://doi.org/10.1557/jmr.2006.0127

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