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Electron energy loss spectroscopy (EELS) technique has been used to map the elemental distribution in Fe90Sc10 primary glassy nanoparticles (GNp) and in the corresponding nanoglass (NG) produced by consolidation of the GNp. Due to the effect of surface segregation, Fe has been identified to enrich at the surfaces of the primary GNp. This behavior was found to agree with the theoretical results calculated...
Inverse Hall–Petch effect/grain size softening in quasi- and nanocrystalline materials at ambient/low temperatures is attributed to mesoscopic (~a grain diameter or more) grain/interphase boundary sliding controlled flow. Equations for estimating the free energy of activation for the rate controlling process, the free volume fraction present in a basic sliding unit and the average number of grain...
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