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Modeling of texture evolution in copper under equal channel angular pressing

  • Seung Chul Baik , Yuri Estrin EMAIL logo , Ralph Jörg Hellmig , Hyo-Tae Jeong , H.-G. Brokmeier und Hyoung Seop Kime
Veröffentlicht/Copyright: 5. Februar 2022
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 94 Heft 11

Abstract

Texture evolution was analyzed with the full-constraint Taylor model for an idealized perfectly plastic face-centered cubic material as well as for real, strain-hardening copper subjected to equal channel angular pressing (ECAP). For the idealized material, the stress in the plastically deformed part of the billet was shown to be uniform leading to complete filling of the die. Finite element simulations showed that plastic deformation is localized in a narrow shear zone and that the plastic strain and texture in the billet become uniform after ECAP. A simplified recipe for texture calculation akin to that proposed by Gholinia et al. was suggested: it reduces the deformation under ECAP to a combination of two rotations separated by tension-compression. For the case of copper, a strain hardening model based on dislocation density evolution was used. It was shown that due to significant strain hardening during the first ECAP pass, the flowing material does not fill the outside die corner and a strain and texture non-uniformity develops. A gradual decrease of the strain hardening in subsequent ECAP passes leads to a more uniform strain and texture across the billet. The simulated pole figures were shown to be in good agreement with the neutron diffraction data for copper deformed by ECAP (Routes A, Cr, Bγ and Bcr) suggesting that the model used provides a reliable modeling tool for simulating texture evolution under ECAP.

Keywords: Equal channel angular pressing; Severe plastic deformation; Dislocation density; Finite element analysis; Copper; Texture evolution
Prof. Dr. Juri Estrin Institut für Werkstoffkunde und Werkstofftechnik Technische Universität Clausthal Agricolastr. 6, D-38678 Clausthal-Zellerfeld, Germany Tel.: +49 5323 722 004 Fax: +49 5323 723 148

  1. Financial support from the Deutsche Forschungsgemeinschaft under grant ES 74/9-1 is gratefully acknowledged. Partial support from Ministry of Science and Culture of Lower Saxony through a research fellowship (Seung Chul Baik) is appreciated. Hyoung Seop Kim acknowledges funding received from Korea Research Foundation through Grant KRF-2001-041-E00418. The authors thank the GKSS Research Center Geesthacht GmbH for support in neutron diffraction measurements at the Research Reactor FRG-1 funded by the German Ministry of Education and Research under the contract number 03BRE8CL. Useful discussions with Sangbong Yi and Min Hong Seo are gratefully appreciated.

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Received: 2003-03-31
Published Online: 2022-02-05

© 2003 Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Frontmatter
  2. Articles/Aufsätze
  3. Grain boundary diffusion and segregation of Ge in Cu: Radiotracer measurements in different kinetic regimes
  4. Thermal diffusivities of uniaxially cold-pressed Fe2Mo powders
  5. Dislocation structure and crystallite size distribution in plastically deformed Ti determined by X-ray peak profile analysis
  6. Modeling of texture evolution in copper under equal channel angular pressing
  7. Method for in situ texture investigation of recrystallization of Cu and Ti by high-energy synchrotron X-ray diffraction
  8. Contribution of dislocation substructures developed during cold rolling to the formation of rolling textures in Al–Mg alloys
  9. Controlled change in the plastic working conditions of metals in the plane state of strain
  10. Finite element analysis of the thermo-mechanical fatigue of DD8 single crystal nickel-based superalloy
  11. Factors influencing the extent of hydrogen-enhanced brittle cracking in a Cu-strengthened HSLA steel during monotonic loading
  12. Textures and precipitates in Ti-stabilized interstitial-free steel
  13. Coarsening kinetics of Cu particles in an Fe-1.5% Cu alloy
  14. Kinetics of the discontinuous precipitation of a liquid phase in Cu–In alloys
  15. Influence of homogenization on the processing map for hot working of as-cast Mg–2Zn–1Mn alloy
  16. Some characteristics of electrospark deposition
  17. Aktuelle Arbeiten in der Konstitution
  18. Notifications/Mitteilungen
  19. Personal/ Personelles
  20. DGM Events
https://doi.org/10.1515/ijmr-2003-0217
Schlagwörter für diesen Artikel
Equal channel angular pressing; Severe plastic deformation; Dislocation density; Finite element analysis; Copper; Texture evolution

Artikel in diesem Heft

  1. Frontmatter
  2. Articles/Aufsätze
  3. Grain boundary diffusion and segregation of Ge in Cu: Radiotracer measurements in different kinetic regimes
  4. Thermal diffusivities of uniaxially cold-pressed Fe2Mo powders
  5. Dislocation structure and crystallite size distribution in plastically deformed Ti determined by X-ray peak profile analysis
  6. Modeling of texture evolution in copper under equal channel angular pressing
  7. Method for in situ texture investigation of recrystallization of Cu and Ti by high-energy synchrotron X-ray diffraction
  8. Contribution of dislocation substructures developed during cold rolling to the formation of rolling textures in Al–Mg alloys
  9. Controlled change in the plastic working conditions of metals in the plane state of strain
  10. Finite element analysis of the thermo-mechanical fatigue of DD8 single crystal nickel-based superalloy
  11. Factors influencing the extent of hydrogen-enhanced brittle cracking in a Cu-strengthened HSLA steel during monotonic loading
  12. Textures and precipitates in Ti-stabilized interstitial-free steel
  13. Coarsening kinetics of Cu particles in an Fe-1.5% Cu alloy
  14. Kinetics of the discontinuous precipitation of a liquid phase in Cu–In alloys
  15. Influence of homogenization on the processing map for hot working of as-cast Mg–2Zn–1Mn alloy
  16. Some characteristics of electrospark deposition
  17. Aktuelle Arbeiten in der Konstitution
  18. Notifications/Mitteilungen
  19. Personal/ Personelles
  20. DGM Events
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