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Steady-state creep of an alloy based on the intermetallic compound Ni3Al(γ′)

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Abstract

An investigation of the steady-state creep of a Ni3Al.10 at% Fe alloy (γ′) has shown that two creep mechanisms were operative over the temperature range 530 to 930° C. The experimental data at low temperatures (below 680° C) were not consistent with any of the established creep theories. However, the experimental data were in good agreement with a proposed model for cross-slip from octahedral {111} planes on to cube {100} planes in Li2 crystals. Above 680° C, the rate-controlling mechanism, which had an activation energy of 3.27eV atom−1, is considered to be the removal/production of APBs during climb.

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Author notes

  1. J. R. Nicholls

    Present address: Department of Materials, Cranfield Institute of Technology, Cranfield, Bedford

Authors and Affiliations

  1. Department of Metallurgy and Materials Science, Imperial College, London, UK

    J. R. Nicholls & Rees D. Rawlings

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  1. J. R. Nicholls
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  2. Rees D. Rawlings
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Nicholls, J.R., Rawlings, R.D. Steady-state creep of an alloy based on the intermetallic compound Ni3Al(γ′). J Mater Sci 12, 2456–2464 (1977). https://doi.org/10.1007/BF00553933

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  • DOI: https://doi.org/10.1007/BF00553933

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