Abstract
To investigate the influence of varying pitch values on the flow behavior of materials and the mechanical attributes of stationary shoulder friction stir lap welded (SSFSLW) joints. In this paper, three kinds of tools with different pitches are designed, and the lap joint of a 6061-T6 aluminum alloy plate and an AlSi10MnMg alloy plate was realized by stationary shoulder friction stir welding. Different computational fluid dynamics (CFD) models of friction stir lap welding were founded and the connection between the pitch and material flow behavior was investigated. The increased pitch pin boosts the velocity of material in the shear layer, expands flow area of aluminum alloy material, and promotes materials flow upward along the orientation of pin thread. The pin with a 1 mm pitch results in a joint that featuring the shortest hook extension distance, the largest effective sheet thickness (EST), and the largest effective lap width (ELW). The fracture locations of shear testing are all on the base material of AlSi10MnMg alloy. Numerous dimples could be seen at the fracture appearance, and the type of fracture is ductile fracture.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call