Optimization and Evaluation of Residual Stress in Dissimilar AA6082–AA7075 Alloys Welded by Ultrasonic FSW under Temperature-Dependent Conditions

Key Points

• Significant reduction in residual stress occurs at specific temperature conditions, enhancing alloy performance.
• Residual stress analysis shows maximum optimization at defined ultrasonic friction stir welding parameters with variances noted.
• Assessment using ultrasonic friction stir welding methods establishes effective temperature-dependent conditions for alloy welding.
• Study highlights the importance of optimized residual stress management in dissimilar alloy combinations for industrial applications.