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The recrystallization characteristics of moderately deformed aluminum

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Abstract

The early stage of isothermal recrystallization of moderately deformed, polycrystalline alloys of zone-refined aluminum containing 20 and 45 at. ppm of Au has been studied by quantitative metallography. The basic structural parametersX v , the volume fraction recrystallized, andS v , the grain boundary area per unit volume, were measured on specimens annealed for different times at specific temperatures in the range 80° to 187°C. Both the maximum, G m , and the average,\(\bar G\), growth rates of the recrystallizing grains were also determined. All results could be interpreted in terms of a site-saturated, matrix grain edge nucleation at zero time with subsequent two-dimensional growth perpendicular to the nucleated edge controlling recrystallization kinetics. An equation relatingS v toX v was derived and found to describe the experimental data quite well. Experimentally, the ratio\(G_m /\bar G\) was 2.6 and the activation energy for growth was 25,700 cal per mole.

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  1. Deformation and Annealing Studies Group, Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tenn.

    R. A. Vandermeer (Laboratory Head)

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  1. R. A. Vandermeer
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Vandermeer, R.A. The recrystallization characteristics of moderately deformed aluminum. Metall Trans 1, 819–826 (1970). https://doi.org/10.1007/BF02811760

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