Premium
Disclinations in Plastically Deformed Metallic Materials
Author(s) -
Klimanek P.,
Klemm V.,
Romanov A. E.,
Seefeldt M.
Publication year - 2001
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/1527-2648(200111)3:11<877::aid-adem877>3.0.co;2-l
Subject(s) - materials science , metallurgy , composite material , forensic engineering , engineering
Cold‐working of metallic materials up to large strains is usually characterised by simultaneous substructure evolution on different length scales and accompanied by the formation of significant lattice rotations. A promising tool for the description of such microstructure development is the concept of partial disclinations. Transmission electron microscopy (TEM) studies illustrate clearly, that defects of this kind are frequently existent in cold‐worked metals and have to be accepted as an important defect entity in the substructure evolution at larger strains. Moreover, it is shown that substructure modelling on the base of a coupled dislocation–disclination dynamics leads to satisfying correspondence of calculated substructure characteristics with experimental results obtained by TEM, X‐ray diffractometry, and EBSD (electron backscattering diffraction), and to a satisfying prediction of the macroscopic deformation behaviour, i.e., especially the transition from stage