轴向超声振动对搅拌摩擦焊过程中金属流动行为的影响

何长树, 郄默繁, 张志强, 赵骧

Effect of Axial Ultrasonic Vibration on Metal Flow Behavior During Friction Stir Welding

HE Changshu, QIE Mofan, ZHANG Zhiqiang, ZHAO Xiang

图2 不同观察截面的示意图

Fig.2 Schematics of sampling (a), longitudinal observation section (b), and horizontal observation section (c) (AS—advancing side, RS—retreating side, Z—distance from top surface of joint)