Journal article · Conference paper
Disorientations and their role on the work-hardening in stage IV
The eect of deformation-induced disorientations on work-hardening of metals is modelled by dislocation dynamics. By incorporating excess dislocations related to disori- entations, Kocks' dislocation model describing stage III hardening is extended to stage IV. Disorientations evolving from purely statistical reasons still lead to stage III behavior and a saturation of the ow stress, but deterministic contributions to the development of disorienta- tions, as dierences in activated slip systems across boundaries, cause a linear increase of the flow stress at large strains.
Such a constant work-hardening rate is characteristic for stage IV.
Language: | English |
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Publisher: | Trans Tech Publications Ltd |
Year: | 2005 |
Pages: | 155-158 |
Proceedings: | 4. International conference on materials structure and micromechanics of fracture |
ISSN: | 16629752 , 02555476 , 22976620 and 14226375 |
Types: | Journal article and Conference paper |
DOI: | 10.4028/www.scientific.net/MSF.482.155 |
ORCIDs: | Pantleon, W. |