Abstract
In this work, plastic deformation of nickel single crystals with highly symmetric orientations was examined. Revealed scale levels of plastic deformation self-organization and the corresponding deformation mechanisms. It was established that the shear traces and meso-bands are formed due to dislocation glide, macro-bands are formed due to dislocation glide in and near-surface misorientation of local areas, and for folds the disorientation inside the crystal is additionally developed. Based on the morphology of folded structures, it is shown that there is a correlation between the wavelength of the folds, the distance between the misoriented bands and the dislocation substructure. The Hurst exponent and correlation lengths correlate with the stages of the stress-strain curve and, consequently, the type of dislocation substructure.
| Original language | English |
|---|---|
| Article number | 110007 |
| Journal | Materials Characterization |
| Volume | 159 |
| DOIs | |
| Publication status | Published - Jan 2020 |
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Keywords
- Deformation relief self-organization
- FCC single crystal
- Microstructure
- Plastic deformation
- Scaling
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Self-organization processes during deformation of nickel single crystals. / Ekaterina, Alfyorova; Andrey, Filippov.
In: Materials Characterization, Vol. 159, 110007, 01.2020.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Self-organization processes during deformation of nickel single crystals
AU - Ekaterina, Alfyorova
AU - Andrey, Filippov
PY - 2020/1
Y1 - 2020/1
N2 - In this work, plastic deformation of nickel single crystals with highly symmetric orientations was examined. Revealed scale levels of plastic deformation self-organization and the corresponding deformation mechanisms. It was established that the shear traces and meso-bands are formed due to dislocation glide, macro-bands are formed due to dislocation glide in and near-surface misorientation of local areas, and for folds the disorientation inside the crystal is additionally developed. Based on the morphology of folded structures, it is shown that there is a correlation between the wavelength of the folds, the distance between the misoriented bands and the dislocation substructure. The Hurst exponent and correlation lengths correlate with the stages of the stress-strain curve and, consequently, the type of dislocation substructure.
AB - In this work, plastic deformation of nickel single crystals with highly symmetric orientations was examined. Revealed scale levels of plastic deformation self-organization and the corresponding deformation mechanisms. It was established that the shear traces and meso-bands are formed due to dislocation glide, macro-bands are formed due to dislocation glide in and near-surface misorientation of local areas, and for folds the disorientation inside the crystal is additionally developed. Based on the morphology of folded structures, it is shown that there is a correlation between the wavelength of the folds, the distance between the misoriented bands and the dislocation substructure. The Hurst exponent and correlation lengths correlate with the stages of the stress-strain curve and, consequently, the type of dislocation substructure.
KW - Deformation relief self-organization
KW - FCC single crystal
KW - Microstructure
KW - Plastic deformation
KW - Scaling
UR - http://www.scopus.com/inward/record.url?scp=85075864316&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85075864316&partnerID=8YFLogxK
U2 - 10.1016/j.matchar.2019.110007
DO - 10.1016/j.matchar.2019.110007
M3 - Article
AN - SCOPUS:85075864316
VL - 159
JO - Materials Characterization
JF - Materials Characterization
SN - 1044-5803
M1 - 110007
ER -