Special features of the formation of welded joints in friction stir welding of V-1469 aluminium alloy

Abstract

The experimental results show that friction stir welding of aluminium alloys may be accompanied by the formation of defects in the form of discontinuities, delamination cavities, ‘sticking’ and also a specific ‘tunnel’ defect. The majority of these defects are associated with the welding conditions and are efficiently detected by X-ray inspection.

Keywords:

• friction stir welding
• aluminium–lithium alloys
• X-ray
• capillary and ultrasonic methods of inspection

Notes

^1. Eur. Pat. 0615480B1. of the thermal cycle of welding [5]. Therefore, in this case, it is especially efficient to use friction stir welding (FSW) [6,7] 1

^2. Eur. Pat. 95907888.2.