Details
| Original language | English |
|---|---|
| Pages (from-to) | 1831-1842 |
| Number of pages | 12 |
| Journal | Acta materialia |
| Volume | 53 |
| Issue number | 6 |
| Publication status | Published - Apr 2005 |
| Externally published | Yes |
Abstract
Very high strain hardening coefficients (=G/23) are observed for aluminum-alloyed face-centered cubic Hadfield steel single crystals under tensile loading. Alloying with aluminum suppressed deformation twinning in two of the three crystallographic orientations studied, and transmission electron microscopy results revealed the existence of dense dislocation walls (sheets) along crystallographic directions that form barriers to slip deformation. A visco-plastic self-consistent algorithm was modified to account for the interaction between the active slip systems and the high density dislocation walls, producing close prediction of the experimental strain hardening response. The model predicted the added hardening in single crystals deformed along [1̄11], [0 0 1] compared to the [1̄23] orientation, the increase in volume fraction of the dislocation walls with increased deformation and the role of twinning in the [1 2 3] orientation.
Keywords
- Crystal plasticity, Dislocation walls, Hadfield steel, Microstructure, Strain hardening
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Materials Science(all)
- Ceramics and Composites
- Materials Science(all)
- Polymers and Plastics
- Materials Science(all)
- Metals and Alloys
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In: Acta materialia, Vol. 53, No. 6, 04.2005, p. 1831-1842.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Strain hardening behavior of aluminum alloyed Hadfield steel single crystals
AU - Canadinc, D.
AU - Sehitoglu, H.
AU - Maier, H. J.
AU - Chumlyakov, Y. I.
N1 - Funding Information: This work was supported by the National Science Foundation Grant DMR-0313489. The authors are grateful to Dr. Carlos Tomé for kindly offering the Code VPSC Version 5.0 to be modified in the modeling effort presented in this paper.
PY - 2005/4
Y1 - 2005/4
N2 - Very high strain hardening coefficients (=G/23) are observed for aluminum-alloyed face-centered cubic Hadfield steel single crystals under tensile loading. Alloying with aluminum suppressed deformation twinning in two of the three crystallographic orientations studied, and transmission electron microscopy results revealed the existence of dense dislocation walls (sheets) along crystallographic directions that form barriers to slip deformation. A visco-plastic self-consistent algorithm was modified to account for the interaction between the active slip systems and the high density dislocation walls, producing close prediction of the experimental strain hardening response. The model predicted the added hardening in single crystals deformed along [1̄11], [0 0 1] compared to the [1̄23] orientation, the increase in volume fraction of the dislocation walls with increased deformation and the role of twinning in the [1 2 3] orientation.
AB - Very high strain hardening coefficients (=G/23) are observed for aluminum-alloyed face-centered cubic Hadfield steel single crystals under tensile loading. Alloying with aluminum suppressed deformation twinning in two of the three crystallographic orientations studied, and transmission electron microscopy results revealed the existence of dense dislocation walls (sheets) along crystallographic directions that form barriers to slip deformation. A visco-plastic self-consistent algorithm was modified to account for the interaction between the active slip systems and the high density dislocation walls, producing close prediction of the experimental strain hardening response. The model predicted the added hardening in single crystals deformed along [1̄11], [0 0 1] compared to the [1̄23] orientation, the increase in volume fraction of the dislocation walls with increased deformation and the role of twinning in the [1 2 3] orientation.
KW - Crystal plasticity
KW - Dislocation walls
KW - Hadfield steel
KW - Microstructure
KW - Strain hardening
UR - http://www.scopus.com/inward/record.url?scp=13844281572&partnerID=8YFLogxK
U2 - 10.1016/j.actamat.2004.12.033
DO - 10.1016/j.actamat.2004.12.033
M3 - Article
AN - SCOPUS:13844281572
VL - 53
SP - 1831
EP - 1842
JO - Acta materialia
JF - Acta materialia
SN - 1359-6454
IS - 6
ER -