Enhancement of mechanical and physical properties of Cu–Ni composites by various contents of Y2O3 reinforcement

• DOI: 10.1016/j.jmrt.2024.03.075
• Publication Date: 2024-03-16T07:37:35Z
• Authors: Walaa Abd-Elaziem; Atef Hamada; Tarek Allam; Moustafa M. Mohammed; Mohammad Abd-El H...; Sally Samah; Doaa Wasfy; Moustafa A. Darwish; Y Omayma Abd Elgu...; Sally Elkatatny
• Keywords: Composite material; Metal Matrix Composites: Science and Applications; 670; Materials Science; Material Properties; FOS: Mechanical engineering; Mechanical properties; Metal Matrix Composites; Engineering; Powder metallurgy; Coefficient of thermal expansion; Yttria; Mechanical Properties; Cu-matrix composites; info:eu-repo/classification/ddc/670; Mining engineering. Metallurgy; Synthesis and Properties of Cemented Carbides; Mechanical Engineering; TN1-997; Ceramic Materials and Processing; Materials science; Reinforcement; Physical Sciences; Ceramics and Composites; Cu–Ni; Composite Materials

The increasing demand for materials possessing enhanced mechanical strength, high thermal conductivity, and excellent electrical properties has grown significantly. Cu-matrix composites, especially Cu– Ni, present a promising candidate to fulfill these demands. In this study, Cu–Ni composites were successfully synthesized using powder metallurgy with various additions (0–1.5 wt%) of Yttria (Y2O3)-reinforcement aiming enhance their mechanical, thermal, properties. microstructural investigations demonstrated uniform distribution Y2O3 particles slight increase in porosity the matrix. 1.5 wt% showed presence Cu2NiZn intermetallic compounds, potentially harming physical Y2O3-reinforcement significantly increased hardness led moderate rise yield ultimate compressive strengths. results indicated that matrix without had highest coefficient expansion, which decreased addition Y2O3, leading improved composites. This study puts an emphasis on importance dispersion extent enhancing