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Probability analysis of the azimuthal distribution of glide traces on the surface of plastically deformed polycrystalline metals
Author(s) -
Preuss Heinz H. W.
Publication year - 1987
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170220218
Subject(s) - perpendicular , materials science , isotropy , slip (aerodynamics) , crystallite , condensed matter physics , geometry , critical resolved shear stress , shear stress , shear (geology) , stress (linguistics) , texture (cosmology) , distribution function , composite material , optics , physics , mathematics , metallurgy , thermodynamics , shear rate , linguistics , philosophy , image (mathematics) , artificial intelligence , viscosity , computer science
With the simple assumption of an isotropic distribution of grain‐orientation (absence of texture) and independent plastic deformation of the grains, when by increasing load some constant limit of the resolved shear stress is reached for any slip system within the grain, one can find the azimutal distribution of glide traces on the free surface of the material by crystallgeometrical probability analysis. The azimutal distribution is independent on crystal symmetry and is characterised by a gap symmetrically arranged around the stress direction and by a flat minimum perpendicular to the stress direction. The height of the minimum does not depend upon the level of stress but is nearly a linear function of the real local plastic deformation as a consequence of developing texture.