Ex-situ and in-situ reinforced copper matrix composite samples containing 1.1 wt. % and 2 wt. % Al2O3 were produced by spark plasma sintering (SPS) at 830 °C and holding time of 30 min. In-situ reinforced sample was synthesized by a novel technique using the reaction between ball-milled copper oxide and Cu-10 wt. % Al filings as the additive and copper powder. The in-situ formation of alumina reinforcement was confirmed by SEM observation and EDS analysis. Morphology and distribution of reinforcement phase in different composite samples were studied. The in-situ reinforced composite sample showed superior flexural fracture strength and strain (349 MPa and 0.027, respectively). Different patterns of crack propagation were observed in the SEM images of fracture surfaces: the reinforcement’s interface path (due to the formation of undesired oxide phase) was dominant in the ex-situ samples, while the interface of in-situ reinforcements remained intact and the cracks originated in the agglomeration sites.
26. Dowling NE. Mechanical behavior of materials: engineering methods for deformation, fracture, and fatigue. Prentice-Hall int, Englewood Cliffs, New Jersey, 1993.
Khodabakhshzade Fallah, M., Ghesmati Tabrizi, S., & Seyedi, S. (2021). Investigation of in-situ synthesis of alumina reinforcement and comparative flexural behavior with respect to ex-situ Al2O3 reinforced copper composite. Journal of Ultrafine Grained and Nanostructured Materials, 54(1), 101-111. doi: 10.22059/jufgnsm.2021.01.11
MLA
Maoud Khodabakhshzade Fallah; Saeid Ghesmati Tabrizi; Sheida Seyedi. "Investigation of in-situ synthesis of alumina reinforcement and comparative flexural behavior with respect to ex-situ Al2O3 reinforced copper composite", Journal of Ultrafine Grained and Nanostructured Materials, 54, 1, 2021, 101-111. doi: 10.22059/jufgnsm.2021.01.11
HARVARD
Khodabakhshzade Fallah, M., Ghesmati Tabrizi, S., Seyedi, S. (2021). 'Investigation of in-situ synthesis of alumina reinforcement and comparative flexural behavior with respect to ex-situ Al2O3 reinforced copper composite', Journal of Ultrafine Grained and Nanostructured Materials, 54(1), pp. 101-111. doi: 10.22059/jufgnsm.2021.01.11
VANCOUVER
Khodabakhshzade Fallah, M., Ghesmati Tabrizi, S., Seyedi, S. Investigation of in-situ synthesis of alumina reinforcement and comparative flexural behavior with respect to ex-situ Al2O3 reinforced copper composite. Journal of Ultrafine Grained and Nanostructured Materials, 2021; 54(1): 101-111. doi: 10.22059/jufgnsm.2021.01.11