Effect of primer and sealant in refill friction stir spot welded joints on strength and fatigue behaviour of aluminium alloys
International Journal of Fatigue(2023)
摘要
•Primer and sealant application reduces the refill friction stir spot welds strength.•Only sealant application results in a relevant improvement of mechanical properties.•The primer-free welds exhibit an improved fatigue behaviour.•Primer causes a partially bonded stirred and thermo-mechanically affected zones.
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关键词
Aluminium alloys,Aerospace,Welding technology,Fatigue strength,Microscopy,Fractography
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