A critical analysis of collision dynamics pertaining to aluminum micro particles on aluminium 6061 alloy substrate in cold spray additive manufacturing process

Suhail Nazir Wani * and Munish Baboria

Department of Mechanical Engineering, GCET Jammu (UT), India.
 
Review
International Journal of Science and Research Archive, 2023, 08(01), 119-130.
Article DOI: 10.30574/ijsra.2023.8.1.0354
Publication history: 
Received on 23 November 2022; revised on 01 January 2023; accepted on 04 January 2023
 
Abstract: 
Cold spray (CS) is a form of additive manufacturing process, involving the accumulation of ductile metal micro particles to create new surface coatings or free-standing structures. Metallic particles are accelerated through a gas stream, experience a high-strain-rate microscopic ballistic collisions against a target substrate. It yields tremendous amounts of kinetic energy from extreme plastic deformation of the particles and substrate. In this paper, the dynamic behavior of aluminium micro-particles during the collision is analysed using micro-ballistic method. Aluminum 6061 alloy particles, approximately 20 μm in diameter, impact and rebound off aluminum 6061 alloy substrate target surface over a broad range of surrounding temperatures and impact velocities. This, in turn, can provide insight into the underlying material science behind the cold spray process.
 
Keywords: 
Cold spray (CS); Substrate; Impact velocity; Rebound velocity; Restitution; Temperature
 
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