Abstract: Objective The aim is to explore the feasibility of preparing LD10 aluminum alloy multilayer deposited components by additive friction stir deposition (AFSD) technology, providing a foundation for optimizing the AFSD process of LD10 aluminum alloy. Methods Microstructure, mechanical properties and fracture mechanism of LD10 aluminum alloy deposited components were systematically investigated through metallographic analysis, microhardness testing, tensile testing and fracture scanning electron microscopy analysis. Results The results demonstrated that LD10 aluminum alloy multilayer deposited components fabricated via AFSD exhibited excellent formability, with uniform and refined equiaxed grains. The average tensile strength along travel direction (282.6 MPa ± 23.5 MPa) and transverse direction (278.6 MPa ± 30.6 MPa) was comparable, both significantly higher than that along build direction (190.9 MPa ± 26.2 MPa). Fracture mode of LD10 aluminum alloy multilayer deposited components manifested as a ductile fracture pattern occurring through the micro-void coalescence mechanism. Conclusion Well-formed LD10 aluminum alloy multilayer deposited components can be fabricated through AFSD process, with stable mechanical properties.