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Densification of titanium powder during hot isostatic pressing

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Abstract

The densification of spherical and angular titanium powder during hot isostatic pressing (HIP) at 700 °C has been studied. The angular powder densifies in a manner similar to the spherical powder despite its low initial packing density. Good agreement is found between a model for the HIP of monosize spheres and the experimental data for both spherical and angular powder provided that the transition between the initial stage of densification (contacts between individual particles) and the final stage (compact is a homogeneous solid with isolated pores) occurs at a density of roughly 95 pct of theoretical. This is consistent with observations of the pore microstructure as a function of density.

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Authors and Affiliations

  1. Department of Materials Engineering, Rensselaer Polytechnic Institute, 2180-3590, Troy, NY

    B. K. Lograsso (Research Engineer)

  2. Metals Science and Engineering Program, The Pennsylvania State University, 16802, University Park, PA

    D. A. Koss (Professor and Chairman)

Authors
  1. B. K. Lograsso
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  2. D. A. Koss
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Formerly with the Department of Metallurgical Engineering, Michigan Technological University, Houghton, MI 49931.

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Lograsso, B.K., Koss, D.A. Densification of titanium powder during hot isostatic pressing. Metall Trans A 19, 1767–1773 (1988). https://doi.org/10.1007/BF02645145

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  • DOI: https://doi.org/10.1007/BF02645145

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