抄録
The elastic constants of ε-phase Ag–Zn alloys in the composition range from about 68 to 84 at.%Zn have been measured using a ultrasonic pulse-echo overlapping method. The elastic constants c11, c44 and c66 increase linearly with zinc content. c33 decreases linearly up to 75 at.%Zn and then fall more rapidly. On the other hand, c13 increases linearly up to 75 at.%Zn and then rises rapidly. The axial ratio decreases linearly with zinc content, while C=c11+c12+2c33−4c13 which correspond to a strain that change the axial ratio at constant volume, fall more rapidly above 75 at.%Zn. Based on the obtained results, we discuss the relation between the axial ratio change and phase stability, and elastic behavior.
