Abstract

Effects of the quenching temperature on the intragranular and cellular precipitations in a Cu-1.5%Be alloy on aging at 523-593 K were studied by hardness measurement, optical and electron microscopic observations, and electrical resistivity measurement. The intragranular precipitation was accelerated with increasing quenching temperature. Especially the formation of G.P. zones and the γ phase was accelerated. The reason was explained by the increase in the vacancy concentration needed for the diffusion of the Be atom. The cellular precipitation was suppressed with increasing quenching temperature.

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