THE VARIATION OF ULTRASONIC ATTENUATION IN Al-Cu ALLOY DURING PUSH-PULL FATIGUE PROCESS
Al—Cu合金在拉压循环过程中的超声衰减

The authors measured the change of ultrasonic attenuation in Al-0.021wt% Cu alloy during push-pull fatigue process and obtained a result different from that of other researchers, and explained this change with the movement of bowing, returning and slipping of dislocations.