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Strain localizations in ultra low carbon steel: exploring the role of dislocations

(2011) ISIJ INTERNATIONAL. 51(5). p.849-856
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Abstract
Ultra low carbon steel samples were near plane strain deformed at different strains, strain rates and temperatures. Density of grain interior strain localizations in gamma(ND//< 111 >) and theta(ND//< 111 >) fibres were evaluated against micro-stress estimates through X-ray line profile measurements. The patterns were remarkably different between the fibres. The increase in strain localizations were associated with increased dislocation density. This effect was more pronounced in gamma-fibre. In theta-fibre, however, the peaks were increasingly more asymmetric and dislocation substructures were stipulated to have lesser recovery. Discrete dislocation dynamics simulations for single crystal pure iron also brought in different behavior for gamma and theta fibres: increase in dislocation density in the former was estimated to be similar to 5 times more. A combination of textural softening and large/positive increase in dislocation density appears to justify the preference for strain localizations in gamma-fibre.
Keywords
PARTICLE-SIZE, ANNEALING TEXTURES, DYNAMICS SIMULATIONS, deformation, low carbon steel, dislocation, X-ray diffraction, X-ray line profile analysis, strain localizations, warm working, SHEAR BANDS, STATIC RECRYSTALLIZATION, RECRYSTALLIZATION TEXTURES, LE-CHATELIER BANDS, IF-STEEL, INTERSTITIAL-FREE STEEL, MODELING TEXTURE CHANGE

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Citation

Please use this url to cite or link to this publication:

MLA
Khatirkar, R, KVM Krishna, Leo Kestens, et al. “Strain Localizations in Ultra Low Carbon Steel: Exploring the Role of Dislocations.” ISIJ INTERNATIONAL 51.5 (2011): 849–856. Print.
APA
Khatirkar, R., Krishna, K., Kestens, L., Petrov, R., Pant, P., & Samajdar, I. (2011). Strain localizations in ultra low carbon steel: exploring the role of dislocations. ISIJ INTERNATIONAL, 51(5), 849–856.
Chicago author-date
Khatirkar, R, KVM Krishna, Leo Kestens, Roumen Petrov, P Pant, and I Samajdar. 2011. “Strain Localizations in Ultra Low Carbon Steel: Exploring the Role of Dislocations.” Isij International 51 (5): 849–856.
Chicago author-date (all authors)
Khatirkar, R, KVM Krishna, Leo Kestens, Roumen Petrov, P Pant, and I Samajdar. 2011. “Strain Localizations in Ultra Low Carbon Steel: Exploring the Role of Dislocations.” Isij International 51 (5): 849–856.
Vancouver
1.
Khatirkar R, Krishna K, Kestens L, Petrov R, Pant P, Samajdar I. Strain localizations in ultra low carbon steel: exploring the role of dislocations. ISIJ INTERNATIONAL. 2011;51(5):849–56.
IEEE
[1]
R. Khatirkar, K. Krishna, L. Kestens, R. Petrov, P. Pant, and I. Samajdar, “Strain localizations in ultra low carbon steel: exploring the role of dislocations,” ISIJ INTERNATIONAL, vol. 51, no. 5, pp. 849–856, 2011.
@article{2950202,
  abstract     = {Ultra low carbon steel samples were near plane strain deformed at different strains, strain rates and temperatures. Density of grain interior strain localizations in gamma(ND//< 111 >) and theta(ND//< 111 >) fibres were evaluated against micro-stress estimates through X-ray line profile measurements. The patterns were remarkably different between the fibres. The increase in strain localizations were associated with increased dislocation density. This effect was more pronounced in gamma-fibre. In theta-fibre, however, the peaks were increasingly more asymmetric and dislocation substructures were stipulated to have lesser recovery. Discrete dislocation dynamics simulations for single crystal pure iron also brought in different behavior for gamma and theta fibres: increase in dislocation density in the former was estimated to be similar to 5 times more. A combination of textural softening and large/positive increase in dislocation density appears to justify the preference for strain localizations in gamma-fibre.},
  author       = {Khatirkar, R and Krishna, KVM and Kestens, Leo and Petrov, Roumen and Pant, P and Samajdar, I},
  issn         = {0915-1559},
  journal      = {ISIJ INTERNATIONAL},
  keywords     = {PARTICLE-SIZE,ANNEALING TEXTURES,DYNAMICS SIMULATIONS,deformation,low carbon steel,dislocation,X-ray diffraction,X-ray line profile analysis,strain localizations,warm working,SHEAR BANDS,STATIC RECRYSTALLIZATION,RECRYSTALLIZATION TEXTURES,LE-CHATELIER BANDS,IF-STEEL,INTERSTITIAL-FREE STEEL,MODELING TEXTURE CHANGE},
  language     = {eng},
  number       = {5},
  pages        = {849--856},
  title        = {Strain localizations in ultra low carbon steel: exploring the role of dislocations},
  volume       = {51},
  year         = {2011},
}

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