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Creep-rupture behavior of iridium at elevated temperatures

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Abstract

The creep-rupture properties of annealed arc-cast iridium were determined between 982°C and 1288°C for times less than 1000 h. It was found possible to fit the rupture and creep results by the Sherby-Dorn parameter method using an activation energy of 70,600 calJmole. It was found that under creep deformation, failure was at least partially intercrystalline, and the failure elongation decreased with increasing temperature and time.

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Authors and Affiliations

  1. General Electric Company, Corporate Research & Development, Schenectady, New York

    R. L. Mehan (Metallurgist)

  2. Space Division, General Electric Company, Cincinnati, Ohio

    E. C. Duderstadt (Materials Engineer)

  3. Space Division, General Electric Company, King of Prussie, Pennsylvania

    E. H. Sayell (Metallurgist)

Authors
  1. R. L. Mehan
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  2. E. C. Duderstadt
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  3. E. H. Sayell
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Mehan, R.L., Duderstadt, E.C. & Sayell, E.H. Creep-rupture behavior of iridium at elevated temperatures. Metall Trans A 6, 885–889 (1975). https://doi.org/10.1007/BF02672312

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  • DOI: https://doi.org/10.1007/BF02672312

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