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8 FSW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 (b) force condition of the plastic metal around the conical surface of pin (Fp1, Fp2—pressure forces; Ff1, Ff2—frictional forces; Fr1, Fr2—resultant forces) (c) schematic of plastic metal flow model in the SZ (ND—normal direction, TD—transverse direction, RD—rolling direction)

Fig.8 Schematics of force condition of different micro-zones and metal flow in SZ during FSW