International Journal of Mechanical Engineering

As an emerging metal manufacturing technology, cold spray additive manufacturing demonstrates excellent material properties and forming efficiency. This paper systematically investigates the strengthening mechanism of high-strength metals during the cold spraying process, with a focus on analyzing the evolution rules of the microstructure of sprayed materials during high-velocity impact and deposition. Through experimental and characterization methods, the effects of key processes such as particle deformation, grain boundary reconstruction, and defect elimination on the mechanical properties of materials are revealed. The optimization of microstructure is crucial for achieving high strength and toughness, which helps promote the application of cold spray technology in high-end manufacturing fields such as aerospace and automotive. This paper provides theoretical support and experimental basis for process optimization and performance improvement of cold-sprayed high-strength metals.

Cold spray additive manufacturing; High-strength metals; Strengthening mechanism; Microstructure evolution; Material properties