Abstract
Changes in mechanical properties are investigated for rapidly solidified Cu-Ti binary alloys during aging by means of tensile tests, micro-Vicker’s hardness measurements and X-ray analysis. Aging induces high rigidity and ductility for rapidly solidified Cu90Ti10 crystalline alloys. Rapid solidification accelerates the spinodal decomposition and solves excess solute atoms (Ti) in the matrix. The excess solute atoms increase the flow stress. Cold-work before aging induces large maximum hardness and accelerates the spinodal decomposition. The form of this transformation is independent of rapid solidification, excess solute atoms and cold-work. Furthermore, it is proposed that the hardness and aging time to maximum hardness are estimated by the use of various hardness factors and multiplying factors, respectively.
