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Deformation behaviour of recrystallized Ni3Al

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Abstract

Deformation behaviour of the recrystallized Ni3AI with non-stoichiometric and stoichiometric compositions have been investigated. Recrystallization microstructures in non-stoichiometric Ni3AI are composed of the Ll2 ordered γ′ and a small amount of the f c c disordered γ. It is shown that the large elongation of non-stoichiometric Ni3AI is due to γ-phase existing at recrystallized γt'-γ′ grain boundaries. Recrystallization microstructures in stoichiometric Ni3AI are confirmed to be a single phase of γ′. Coarse-grained stoichiometric Ni3AI shows considerable ductility, although the fine-grained compound is brittle. The ductility may be related to the low yield strength in the coarse-grained samples.

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Authors and Affiliations

  1. The Research Institute for Iron, Steel and Other Metals, Tohoku University, 880, Sendai, Japan

    S. Hanada, S. Watanabe & O. Izumi

Authors
  1. S. Hanada
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  2. S. Watanabe
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  3. O. Izumi
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Hanada, S., Watanabe, S. & Izumi, O. Deformation behaviour of recrystallized Ni3Al. J Mater Sci 21, 203–210 (1986). https://doi.org/10.1007/BF01144721

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  • DOI: https://doi.org/10.1007/BF01144721

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