For the first time, we have demonstrated adiabatic shear localization in pure, ultra-fine grain (UFG) and nanocrystalline (NC) tungsten (W). Fabricated by severe plastic deformation (SPD), microstructural and mechanical property analyses of the W samples show that the combination of fine grain size, stored strain energy, ultra-high strength, little or no work hardening capacity leads to a unique flow softening behavior. It is further hypothesized that, while maintaining material ductility, ...
This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, composite materials materials and material types:, w whiskers, whiskers parameter values relevant to the data:, 0 c -500 c, 1000 c - 1500 c, 500 c - 1000 c testing and test conditions:, sem, tem, vapor-solid techniques manufacturing:, depositions miscellaneous and special technical terms:, daal04-92-c-4017 contracts, low cost synthesis techniques, mathematical, ...
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