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Early-stage phase separation in liquid-quenched Al-7 at % Zn

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Abstract

The kinetics of GP zone formation in liquid-quenched Al-7 at % Zn was studied with small-angle X-ray scattering. It is found that liquid quenching yields a solid solution in the as-quenched condition which is significantly less clustered than for solid quenching. In addition, the ageing kinetics of the liquid-quenched specimens was observed to be significantly slower than that for solid-quenched specimens. The results indicate that slow ageing in liquid-quenched alloys results from the absence of a high concentration of quenched-in mobile vacancies. It is thus suggested that liquid quenching effectively enables studies of the earliest stages of phase separation in precipitation-hardenable alloys.

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Author notes

  1. Satish C. Agarwal

    Present address: Materials Science Division, Argonne National Laboratory, 60439, Argonne, Illinois, USA

Authors and Affiliations

  1. Department of Materials Science, State University of New York, 11794, Stony Brook, New York, USA

    Satish C. Agarwal & Herbert Herman

Authors
  1. Satish C. Agarwal
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  2. Herbert Herman
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Agarwal, S.C., Herman, H. Early-stage phase separation in liquid-quenched Al-7 at % Zn. J Mater Sci 13, 1549–1554 (1978). https://doi.org/10.1007/BF00553211

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  • DOI: https://doi.org/10.1007/BF00553211

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