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The Effects of Interstitial Content and Annealing on the Flow and Fracture behavior of Polycrystalline ÿ-NiAl

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Abstract

The strain aging behavior of three polycrystalline NiAl alloys has been investigated at temperatures between 300 and 1200 K. Yield stress plateaus, yield stress transients upon a tenfold increase in strain rate, work hardening peaks, and dips in the strain rate sensitivity (SRS) have been observed between 700 and 800 K. These observations are indicative of dynamic strain aging (DSA) and are discussed in terms of conventional strain aging theories.

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Authors and Affiliations

  1. University of Florida, Gainesville, FL, 32611-2066, USA

    M. L. Weaver, V. Levit & M. J. Kaufman

  2. NASA-Lewis Research Center, Cleveland, OH, 44135-3191, USA

    R. D. Noebe

Authors
  1. M. L. Weaver
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  2. V. Levit
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  3. M. J. Kaufman
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  4. R. D. Noebe
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Weaver, M.L., Levit, V., Kaufman, M.J. et al. The Effects of Interstitial Content and Annealing on the Flow and Fracture behavior of Polycrystalline ÿ-NiAl. MRS Online Proceedings Library 364, 425–430 (1994). https://doi.org/10.1557/PROC-364-425

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  • DOI: https://doi.org/10.1557/PROC-364-425

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