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Longitudinal section shows elongated grains of alpha phase and cobalt beryllides.
Cast, homogenized and hot worked. The microstructure shows nonuniform distribution of grain sizes, typical of hot worked product. Greater uniformity in grain size distribution may be achieved in the finished product by successive cold working and annealing operations. Longitudinal section shows equiaxed grains of supersaturated alpha phase, solid solution of beryllium in copper. Cobalt beryllide particles which do not dissolve during solution annealing are observed.