Manuscript entitled “Effect of primer and sealant in refill friction stir spot welded joints on strength and fatigue behaviour of aluminium alloys” has been published in cooperation with partners from TWI Ltd in the International Journal of Fatigue. The paper investigates an application of the refill friction stir spot welding (RFSSW) process in modern aerospace industry by evaluating of experimental works performed on aluminium semi-products in a final configuration state including anodizing, primer, and sealant application. It has been demonstrated that optimised application of corrosion inhibitors before the RFSSW process (offering opportunities to not only reduce a product weight, but also manufacturing time and costs) resulted in only 5–10 % reduction in lap-shear strength and an improved fatigue behaviour (3 to 5-times longer fatigue lives) as compared with the bare configurations.
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