Please use this identifier to cite or link to this item: https://doi.org/10.1177/0021998310369591
Title: Role of microstructure and texture on compressive strength improvement of Mg/(Y2O3 + Cu) hybrid nanocomposites
Authors: Tun, K.S. 
Gupta, M. 
Keywords: compressive properties.
copper
magnesium matrix composites
microwave sintering
yttria
Issue Date: Dec-2010
Citation: Tun, K.S., Gupta, M. (2010-12). Role of microstructure and texture on compressive strength improvement of Mg/(Y2O3 + Cu) hybrid nanocomposites. Journal of Composite Materials 44 (25) : 3033-3050. ScholarBank@NUS Repository. https://doi.org/10.1177/0021998310369591
Abstract: In this study, uniaxial compressive properties of pure magnesium and Mg/(Y2O3 + Cu) hybrid nanocomposites are investigated. Addition of hybrid reinforcements (ceramic + metal) at nano-length scale led to grain-size refinement and the amount of porosity remained below 1%. The presence of hybrid reinforcements led to a significant increase in 0.2% compressive yield strength (CYS) and ultimate compressive strength (UCS) while the failure strain was compromised. Best improvements in 0.2% CYS, UCS, and hardness were realized when the amount of copper was increased to one volume percent for fixed 0.7% Y2O3 nanoparticulates. Comparatively low ductility of magnesium hybrid nanocomposites under compressive loading was attributed to the absence of twinning unlike pure magnesium. The variation in the mechanical properties in this study is correlated with the microstructural features and texture effects. © The Author(s), 2010.
Source Title: Journal of Composite Materials
URI: http://scholarbank.nus.edu.sg/handle/10635/85612
ISSN: 00219983
DOI: 10.1177/0021998310369591
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