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- W2020056178 endingPage "650" @default.
- W2020056178 startingPage "635" @default.
- W2020056178 abstract "There is evidence that metallic glasses can show increased plasticity as the temperature is lowered. This behaviour is the opposite to what would be expected from phenomena such as the ductile–brittle transition in conventional alloys. Data collected for the plasticity of different metallic–glass compositions tested at room temperature and below, and at strain rates from rate 10−5 to 103 s−1, are reviewed. The analogous effects of low temperature and high strain rate, as observed in conventional alloys, are examined for metallic glasses. The relevant plastic flow in metallic glasses is inhomogeneous, sharply localised in thin shear bands. The enhanced plasticity at lower temperature is attributed principally to a transition from shear on a single dominant band to shear on multiple bands. The origins of this transition and its links to shear bands operating ‘hot’ or ‘cold’ are explored. The stress drop on a shear band after initial yielding is found to be a useful parameter for analysing mechanical behaviour. Schematic failure mode maps are proposed for metallic glasses under compression and tension. Outstanding issues are identified, and design rules are considered for metallic glasses of improved plasticity." @default.
- W2020056178 created "2016-06-24" @default.
- W2020056178 creator A5011696010 @default.
- W2020056178 date "2014-10-10" @default.
- W2020056178 modified "2023-10-18" @default.
- W2020056178 title "Inverse ductile–brittle transition in metallic glasses?" @default.
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