Impact of cold spraying on microstructure and mechanical properties of optimized friction stir welded AA2024-T3 joint

The tensile properties of friction stir welded AA2024-T3 joints at the rotation speed range of 600–900 rpm and a constant welding speed of 200 mm/min were summarized, finding that the optimized rotation speed is 600 rpm which yield a maximum tensile strength of 420 MPa. Subsequently, an aluminum coating was deposited on the optimized joint surface by cold spraying (CS). The microstructural evolution in the layer near the surface of the coated...