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9 UAFSW过程中SZ金属不同微区受力状态分析和金属流动示意图 (a) force condition of the plastic metal in the thread groove of pin (a—peak vibration amplitude) (b) force condition of the plastic metal around the conical surface of pin (Fu—ultrasonic force, Fr3—resultant force, FR—resultant force of Fu and Fr3) (c) schematic of plastic metal flow model in the SZ

Fig.9 Schematics of force condition of different micro-zones and metal flow in SZ during UAFSW