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- W1994779057 abstract "The slow crack growth (SCG) resistance (V–KI diagrams) of magnesium aluminate spinel and its tungsten composites with different metallic content (7, 10, 14 and 22 vol.%) is reported. It is found that tungsten plays a crucial role in the composite by increasing crack resistance: the higher the W content, the higher the stress intensity factor needed for crack extension at a given rate. The reinforcement is due to the bridging mechanism performed by metal particles, as it strongly affects the compliance of cracked specimens. Its magnitude is estimated by a compliance function Φ(a) from a double torsion test. From the compliance function, R-curve behaviour is predicted for the composite with highest tungsten content. It explains the effect of metal particles on SCG curves. The W–MgAl2O4 interface is believed to influence the reinforcement mechanism." @default.
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- W1994779057 date "2009-04-01" @default.
- W1994779057 modified "2023-10-06" @default.
- W1994779057 title "Slow crack growth resistance and bridging stress determination in alumina-rich magnesium aluminate spinel/tungsten composites" @default.
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- W1994779057 doi "https://doi.org/10.1016/j.actamat.2009.01.004" @default.
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