Abstract
In this paper, the relation between Kb value and hardness of aged Cu-Be alloys during the aging process is reported. Four aging temperatures of 250°, 280°, 290°and 310°C were selected, and specimens of A type (without cold rolling) and H type (38% cold rolled) were aged for various aging times. Electrical resistivity, Kb value and micro-Vickers hardness were measured on these aged specimens. Moreover, the integrated X-ray intensities were measured from the diffraction intensity curves of intermediate γ' phase and stable γ phase, and the half-value breadth for α matrix phase was determined during the aging process.
It was found that a linear relationship holds between Kb value and hardness throughout the aging process. Furthermore, the optimum aging time to give the maximum Kb values was obtained for four aging temperatures.
