Abstract
By means of measuring the room tempeature internal friction, the tensile strength and the elongation, we have studied on the difference effects between successive and single isothermal annealing upon the recovery and recrystallization process of commercial aluminium and high purity aluminium.
Through the experiments we have confirmed that the change of the internal friction and the tensile properties in the recovery process is related to the difference between successive and single isothermal annealing and that is the repetition of recovery annealing treatment, although the change of these properties in the recrystallization process do not effected to the difference of both annealing method. Then the successive isothermal annealing method, for studying the relation between softening phenomenon and annealing temperature, is more effective than the single isothermal annealing.
