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Discontinuous precipitation in α dilute Co-3% Ti-2% Nb ternary alloy

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Abstract

Optical and electron microscopy have been used to follow the process of discontinuous precipitation in Co-3 wt % Ti-2 wt % Ti-2 wt % Nb alloy. The initiation and growth of the discontinuous reactions occur in competition with well-advanced general coherent precipitation processes. The discontinuous reaction is close to equilibrium and is considered to be driven by the difference between coherent and incoherent equilibria in these systems. Analysis of velocity and spacing data indicate that the rates of the reactions are determined by grain boundary diffusion.

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Authors and Affiliations

  1. Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, 1206 West Green Street, 61801, Urbana, Illinois, USA

    J. Ogender Singh

  2. Department of Metallurgy and Material Science, McMaster University, Hamilton, Ontario, Canada

    G. R. Purdy

Authors
  1. J. Ogender Singh
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  2. G. R. Purdy
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Ogender Singh, J., Purdy, G.R. Discontinuous precipitation in α dilute Co-3% Ti-2% Nb ternary alloy. J Mater Sci 22, 2918–2926 (1987). https://doi.org/10.1007/BF01086491

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  • DOI: https://doi.org/10.1007/BF01086491

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