Back to Search
Start Over
Orientation-dependent plastic deformation in transformer steel: Experiments and dislocation dynamics simulations.
- Source :
-
Acta Materialia . Feb2015, Vol. 84, p256-264. 9p. - Publication Year :
- 2015
-
Abstract
- The anisotropic tensile response of fully processed cold-rolled grain-oriented (CRGO) steel was studied for two crystallographic orientations: (1 1 0) 〈0 0 1〉 and (1 1 0) 〈1 1 ¯ 1〉. They showed remarkably different stress–strain behavior and corresponding developments in deformed microstructures. The (1 1 0) 〈0 0 1〉 oriented CRGO steel specimens retained their orientation stability until ε (true strain) = 0.07. On the other hand, (1 1 0) 〈1 1 ¯ 1〉 oriented specimens underwent significant reorientation and displayed formation of strain localizations by ε = 0.03. Discrete dislocation dynamics (DDD) simulations were carried out – three-dimensional (3-D) for “limited” (∼10 −4 ) plastic strain and two-dimensional (2-D) for the experimentally imposed strain – to investigate the orientation effects on the tensile response of the CRGO steel specimens. 2-D DDD simulations were able to provide qualitative and quantitative estimates of the post-yield tensile behavior of (1 1 0) 〈0 0 1〉 and (1 1 0) 〈1 1 ¯ 1〉 samples. Direct comparison between experimental and simulation results confirmed the orientation effect on the overall macroscopic response of the specimens. It was observed that the response of (1 1 0) 〈1 1 ¯ 1〉 specimens showed features of reorientation and textural softening and these were captured by the Taylor type deformation simulations. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13596454
- Volume :
- 84
- Database :
- Academic Search Index
- Journal :
- Acta Materialia
- Publication Type :
- Academic Journal
- Accession number :
- 100025061
- Full Text :
- https://doi.org/10.1016/j.actamat.2014.10.042