Non-proportionality of strain and coupling effects on dislocation distribution and ductility in ferritic steel polycrystals

T. O. Erinosho; A. C F Cocks; F. P E Dunne

Non-proportionality of strain and coupling effects on dislocation distribution and ductility in ferritic steel polycrystals

T. O. Erinosho, A. C F Cocks, F. P E Dunne

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

Abstract

Non-proportionality of straining, initial texture and hardening have been investigated in a ferritic steel polycrystal within a crystal plasticity finite element framework. Two extreme forms of hardening are investigated; namely, isotropic latent-hardening and anisotropic self-hardening. Dislocation density evolutions on all independent slip systems have been calculated in order to investigate the establishment of dislocation distributions and evaluate their dependence on non-proportionality, hardening, texture and predicted ductility. The results show that non-proportionality effects are more pronounced under isotropic latenthardening as opposed to anisotropic self-hardening especially under non-proportional uniaxial strains.

Original language	English
Title of host publication	Computational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013
Publisher	International Center for Numerical Methods in Engineering
Pages	275-286
Number of pages	12
ISBN (Print)	9788494140761
Publication status	Published - 2013
Event	5th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2013 - Santa Eulalia, Ibiza Island, Spain Duration: 17 Jun 2013 → 19 Jun 2013

Conference

Conference	5th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2013
Country/Territory	Spain
City	Santa Eulalia, Ibiza Island
Period	17/06/13 → 19/06/13

Keywords

Dislocation distributions
Forming limits
Hardening
Necking
Non-proportionality
Strain localization
Texture

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Erinosho, T. O., Cocks, A. C. F., & Dunne, F. P. E. (2013). Non-proportionality of strain and coupling effects on dislocation distribution and ductility in ferritic steel polycrystals. In Computational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013 (pp. 275-286). International Center for Numerical Methods in Engineering.

Erinosho, T. O. ; Cocks, A. C F ; Dunne, F. P E. / Non-proportionality of strain and coupling effects on dislocation distribution and ductility in ferritic steel polycrystals. Computational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013. International Center for Numerical Methods in Engineering, 2013. pp. 275-286

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title = "Non-proportionality of strain and coupling effects on dislocation distribution and ductility in ferritic steel polycrystals",

abstract = "Non-proportionality of straining, initial texture and hardening have been investigated in a ferritic steel polycrystal within a crystal plasticity finite element framework. Two extreme forms of hardening are investigated; namely, isotropic latent-hardening and anisotropic self-hardening. Dislocation density evolutions on all independent slip systems have been calculated in order to investigate the establishment of dislocation distributions and evaluate their dependence on non-proportionality, hardening, texture and predicted ductility. The results show that non-proportionality effects are more pronounced under isotropic latenthardening as opposed to anisotropic self-hardening especially under non-proportional uniaxial strains.",

keywords = "Dislocation distributions, Forming limits, Hardening, Necking, Non-proportionality, Strain localization, Texture",

author = "Erinosho, {T. O.} and Cocks, {A. C F} and Dunne, {F. P E}",

year = "2013",

language = "English",

isbn = "9788494140761",

pages = "275--286",

booktitle = "Computational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013",

publisher = "International Center for Numerical Methods in Engineering",

note = "5th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2013 ; Conference date: 17-06-2013 Through 19-06-2013",

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Erinosho, TO, Cocks, ACF & Dunne, FPE 2013, Non-proportionality of strain and coupling effects on dislocation distribution and ductility in ferritic steel polycrystals. in Computational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013. International Center for Numerical Methods in Engineering, pp. 275-286, 5th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2013, Santa Eulalia, Ibiza Island, Spain, 17/06/13.

Non-proportionality of strain and coupling effects on dislocation distribution and ductility in ferritic steel polycrystals. / Erinosho, T. O.; Cocks, A. C F; Dunne, F. P E.
Computational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013. International Center for Numerical Methods in Engineering, 2013. p. 275-286.

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

T1 - Non-proportionality of strain and coupling effects on dislocation distribution and ductility in ferritic steel polycrystals

AU - Erinosho, T. O.

AU - Cocks, A. C F

AU - Dunne, F. P E

PY - 2013

Y1 - 2013

N2 - Non-proportionality of straining, initial texture and hardening have been investigated in a ferritic steel polycrystal within a crystal plasticity finite element framework. Two extreme forms of hardening are investigated; namely, isotropic latent-hardening and anisotropic self-hardening. Dislocation density evolutions on all independent slip systems have been calculated in order to investigate the establishment of dislocation distributions and evaluate their dependence on non-proportionality, hardening, texture and predicted ductility. The results show that non-proportionality effects are more pronounced under isotropic latenthardening as opposed to anisotropic self-hardening especially under non-proportional uniaxial strains.

AB - Non-proportionality of straining, initial texture and hardening have been investigated in a ferritic steel polycrystal within a crystal plasticity finite element framework. Two extreme forms of hardening are investigated; namely, isotropic latent-hardening and anisotropic self-hardening. Dislocation density evolutions on all independent slip systems have been calculated in order to investigate the establishment of dislocation distributions and evaluate their dependence on non-proportionality, hardening, texture and predicted ductility. The results show that non-proportionality effects are more pronounced under isotropic latenthardening as opposed to anisotropic self-hardening especially under non-proportional uniaxial strains.

KW - Dislocation distributions

KW - Forming limits

KW - Hardening

KW - Necking

KW - Non-proportionality

KW - Strain localization

KW - Texture

UR - http://www.scopus.com/inward/record.url?scp=84906875260&partnerID=8YFLogxK

M3 - Conference Contribution (Conference Proceeding)

AN - SCOPUS:84906875260

SN - 9788494140761

SP - 275

EP - 286

BT - Computational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013

PB - International Center for Numerical Methods in Engineering

T2 - 5th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2013

Y2 - 17 June 2013 through 19 June 2013

ER -

Erinosho TO, Cocks ACF, Dunne FPE. Non-proportionality of strain and coupling effects on dislocation distribution and ductility in ferritic steel polycrystals. In Computational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013. International Center for Numerical Methods in Engineering. 2013. p. 275-286

Non-proportionality of strain and coupling effects on dislocation distribution and ductility in ferritic steel polycrystals

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