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- W2069898857 startingPage "035402" @default.
- W2069898857 abstract "Atomistic computer simulations were performed to study the influence of radiation-induced damage on grain boundary (GB) sliding processes in bcc tungsten (W), the divertor material in the ITER tokamak and the leading candidate for the first wall material in future fusion reactors. In particular, we calculated the average sliding-friction force as a function of the number of point defects introduced into the GB for a number of symmetric tilt GBs. In all cases the average sliding-friction force at fixed shear strain rate depends on the number of point defects introduced into the GB, and in many cases introduction of these defects reduces the average sliding-friction force by roughly an order of magnitude. We have also observed that as the number of interstitials in the GB is varied, the direction of the coupled GB motion sometimes reverses, causing the GB to migrate in the opposite direction under the same applied shear stress. This could be important in the microstructural evolution of polycrystalline W under the harsh radiation environment in a fusion reactor, in which high internal stresses are present and frequent collision cascades generate interstitials and vacancies." @default.
- W2069898857 created "2016-06-24" @default.
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- W2069898857 date "2012-12-13" @default.
- W2069898857 modified "2023-10-16" @default.
- W2069898857 title "Influence of point defects on grain boundary mobility in bcc tungsten" @default.
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- W2069898857 doi "https://doi.org/10.1088/0953-8984/25/3/035402" @default.
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