Influence of SiC Content on Microstructure, Dislocation Density and Mechanical Behavior of Cu/SiC Composite

H. A. EL-Fattah, Mining and Pet. Dept, Faculty of Engineering, Al-Azhar University, Nasr City, Egypt., M.A. Metwally, M. M. Sadawy, I .G.El- Batanony, Egyptian Natural Gas Company (GASCO), Cairo, Egypt., Mining and Pet. Dept, Faculty of Engineering, Al-Azhar University, Nasr City, Egypt., Mech.Eng.Dept.Faculty of Engineering, Al-Azhar University, Nasr City, Cairo, Egypt.
2022 Journal of University of Shanghai for Science and Technology  
The present investigation has examined the impact of micro-SiC on microstructure, dislocation and mechanical behavior of Cu/SiC composite. The micro-composite samples have been fabricated under a constant pressure (480 MPa) and sintered temperature (860oC) for 2 h. The sintering process was performed under argon gas. The microstructure examination was conducted using SEM/EDS and XRD diffraction. The SiC contents were 0, 5, 10,15,20,25 and 30 volume fraction. The outcomes showed that the density
more » ... was significantly decreased with an increase of silicon carbide content. The relative densities of Cu and Cu/SiC composites was ranged from 91.24% to 83.56% for pure Cu and Cu/30 vol%SiC composites. The copper crystallite size was reduced with growing SiC content while the hardness, ultimate and yield compressive strength increased with increment of SiC volume fraction to 20% vol. The values of hardness, ultimate and yield compressive strength increased to 231 HV,343 and 176 N/mm2 , respectively for the composite sample containing 20% SiC particles with a percentage increase of 75%,26.6% and 57.2% compared with pure Cu.
doi:10.51201/jusst/22/0130 fatcat:xxgtdafqmva2pkzdgfawvvy7ja