Studies on nano-metal dispersed Cu-Cr matrix composite

Nanostructured Cu98Cr2/W composite powder was synthesized at various milling time through high-energy planetary ball milling cryogenically and consolidated at various temperatures (1073 K (800 degrees C) and 573 K (300 degrees C) respectively) by spark plasma sintering (SPS). Further, the detailed characterisation is being investigated through X-ray diffraction (XRD) and transmission electron microscopy (TEM). XRD and TEM analysis shows complete solid solubility of Cr however, W does not form any solid solution at any of the processed parameters. The presence of the W stabilizes the grain at nano level in the powdered as well as sintered sample which is due to Orowan strengthening. Thereby, increasing the hardness of the as processed composite processed at 300 degrees C. (C) 2019 Elsevier B.V. All rights reserved.