Ultrasonic vibration aided laser welding of Al alloys: improvement of laser welding‐quality

摘要: Using a pulsed YAG laser, meltability of Al‐Mg and Al‐Mg‐Si alloys were investigated by single‐pass irradiation. In order to improve the quality in laser welding, effectiveness Ultrasonic Vibration Laser Welding (UVLW) method proposed this paper was experimentally. The also compared with traditional welding methods Normal (NLW) preHeating (HLW). evaluated from geometry melt zone generated single pulse beam. It suggested that ultrasonic vibration suppressed defects improved characteristics due cavitation effects dispersion particles molten pool during welding. influence on preheating investigated. these experiments, UVLW most useful point view improving Al alloys.