Influence of Carrier Gas and Post-Heat Treatment on the Microstructure and Tensile Properties of 3D-Printed Cold Spray Copper Free

This study examines the effects of N₂ and He process gases and heat treatment on the microstructure and mechanical properties of 3D-printed pure copper produced using a low-pressure cold spray system. Microstructural analysis is performed through optical microscopy, while tensile tests are used to evaluate mechanical properties. Samples processed with N₂ demonstrate improved plastic deformation, leading to reduced porosity compared to those processed with He.