Application of a novel friction stir spot welding process on dissimilar aluminum joints

作者: Isam Jabbar Ibrahim , Guney Guven Yapici

DOI: 10.1016/J.JMAPRO.2018.08.018

关键词: KeyholeAluminiumMicrostructureJoint (geology)Spot weldingShear forceWeldingMaterials scienceFracture (geology)Composite material

摘要: Abstract Intermediate layer friction stir spot welding (IL-FSSW) is introduced in this study as a novel technique to eliminate the keyhole associated with conventional (FSSW). This process utilized for fabricating joint of 6061-T6 and 2024-T3 aluminum alloys. The based on preventing occurrence owing addition an intermediate (IL), rendering additional post-treatments unnecessary. Results indicated decent appearance without along improved mechanical performance yielding lap shear force over 4.5 kN. microstructure weld cross-section that IL contributed nugget zone revealed its influence formation hooked structure. fracture surface showed ductile features within boundary, whereas mixed failure was prevalent outside it.

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