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Factors controlling the strength and ductility of high purity beryllium block

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Abstract

Factors affecting the strength and ductility of three types of high purity, hot isostatically pressed beryllium blocks have been studied. Residual cold work in the highest purity materials after hot pressing was identified as a factor causing reduced ductility. It was found that residual cold work could be eliminated and a marked increase in ductility obtained by high temperature annealing. Annealing between 2200°F (1477 K) and 2275°F (1519 K) produced a large number of voids of hexagonal shape and reduced tensile ductility. Above 2275°F (1519 K) the voids were no longer hexagonal and their size was reduced.

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Authors and Affiliations

  1. Material and Composites Laboratory of Lockheed Missiles and Space Co., Inc., 94304, Palo Alto, Calif.

    D. Webster (Research Scientist)

  2. Reentry Systems Materials Engineering group of Lockheed Missiles and Space Co., Inc., Sunnyvale, Calif.

    R. L. Greene (Research Specialist) & R. W. Lawley (Senior Research Engineer)

Authors
  1. D. Webster
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  2. R. L. Greene
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  3. R. W. Lawley
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Webster, D., Greene, R.L. & Lawley, R.W. Factors controlling the strength and ductility of high purity beryllium block. Metall Trans 5, 91–96 (1974). https://doi.org/10.1007/BF02642931

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  • DOI: https://doi.org/10.1007/BF02642931

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