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The three activation energies with isothermal transformations: applications to metallic glasses

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Abstract

In crystallization or precipitation, the activation energy for nucleation of particles,E n, for growth of particles,E g, and for the total process,E c, can all be determined independently by experiment. Formulae relating these three values are developed. Cases of linear and parabolic growth are included for different nucleation rates and morphologies. The formulae are tested experimentally on amorphous alloys (metallic glasses) based on Fe-Ni. The agreement between the theory and the experiments is very satisfactory.

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Authors and Affiliations

  1. Institute of Technology, Department of Metallurgical Engineering, Banaras Hindu University, Varanasi, India

    S. Ranganathan

  2. Institut für Werkstoffwissenschaften der Universität, Erlangen, Nürnberg, W. Germany

    M. Von Heimendahl

Authors
  1. S. Ranganathan
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  2. M. Von Heimendahl
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Ranganathan, S., Von Heimendahl, M. The three activation energies with isothermal transformations: applications to metallic glasses. J Mater Sci 16, 2401–2404 (1981). https://doi.org/10.1007/BF01113575

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  • DOI: https://doi.org/10.1007/BF01113575

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