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- Title
Plastic anisotropy of ferritic-pearlitic steel on the microstructural scale.
- Authors
Meyer, L. W.; Kuprin, C.; Hahn, F.
- Abstract
Carbon steel is tested for monotonic and cyclic torsion up to high plastic strains. The analyzed steel is regarded as a composite formed by different cementite lamellae embedded in the ferrite matrix. This leads to the formation of internal stresses in the process of deformation and anisotropic hardening, especially under alternating loading. Plastic deformation leads to the initiation of lattice defects in the ordered structure. The characteristics of strain hardening are studied under the conditions of multiaxial deformation. It is shown that anisotropic hardening depends on the path and direction of deformation. These conclusions are confirmed by the formation of microstrains and the distribution of dislocations. Under loading, we observe the phenomenon of dynamic reversible recovery, which manifests itself in the formation of dislocation cells and is connected with significant kinematic hardening. The experimental data reveal the necessity of creation of new mathematical models capable of the adequate description of the phenomenon of anisotropic hardening with regard for the microstructure of the material.
- Subjects
ANISOTROPY; PROPERTIES of matter; PLASTICS; FERRITIC steel; PEARLITIC steel; MICROSTRUCTURE; MATERIALS science
- Publication
Materials Science, 2006, Vol 42, Issue 6, p791
- ISSN
1068-820X
- Publication type
Article
- DOI
10.1007/s11003-006-0147-9