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- W269824930 abstract "Abstract : We have investigated the microstructure and mechanical properties of fully dense tungsten with ultrafine-grained (UFG) and nanocrystalline (NC) microstructure. The UFG/NC tungsten was processed by severe plastic deformation at low homologous temperatures (T/Tm). To obtain the UFG microstructure, a combination of equal channel angular pressing at relatively high temperatures followed by rolling at lower temperatures was employed, which resulted in an average grain size of ~500 nm. To obtain the nanocrystalline microstructure (grain size ~100 nm and below), high-pressure torsion was utilized. Our experimental results show that the UFG/NC microstructures not only significantly elevate the strength of tungsten, they also re-instate its ductility, decrease its strain rate sensitivity, and reduce its work hardening capability. These factors work together to greatly enhance the susceptibility of tungsten to adiabatic localization under uni-axial dynamic loading." @default.
- W269824930 created "2016-06-24" @default.
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- W269824930 date "2006-05-01" @default.
- W269824930 modified "2023-09-26" @default.
- W269824930 title "Nanoengineering Applied to Tungsten" @default.
- W269824930 hasPublicationYear "2006" @default.
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