Authors:
Omayma Elkady (Central Metallurical R&D Institute (CMRDI), Egypt)
Hassan Abd Elsabour (Central metallurgical R&D institute (CMRDI), Egypt)
Haytham Elgazzar (Central metallurgical R&D institute, Egypt)
Abstract:
A comprehensive study of copper composites manufactured using Laser Melting Deposition (LMD) and Powder Metallurgy (PM). The main objective is to analyze how these techniques influence the microstructural and mechanical behavior of Cu composites. Copper composites were fabricated via LMD an additive manufacturing process involving layer-by-layer deposition of molten material using a high-energy laser and by conventional PM. Microstructure and X-ray diffraction revealed notable differences in grain morphology and reinforcement distribution between the two methods. LMD specimens exhibited a more refined, predominantly columnar grain structure with localized melt-pool features and reduced porosity whereas PM showed a more homogeneous microstructure but with higher residual porosity. The mechanical evaluation including hardness & compression strength demonstrated that LMD-processed composites possess higher hardness and compression strength, while PM composites exhibited higher ductility. The results underline how manufacturing-induced microstructural variations directly affect mechanical properties, guiding the selection of fabrication routes for optimized a high performance.
DOI:
https://doi.org/10.59499/EP267147488
