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Three-dimensional quantification of texture heterogeneity in single-crystal aluminium subjected to equal channel angular pressing

Journal Article


Abstract


  • A three-dimensional crystal plasticity finite element method (3D CPFEM) modelling of a real equal channel angular pressing (ECAP) process for investigating the mechanical properties and texture evolutions of single-crystal aluminium has been developed for the first time. The challenge of modelling such a severe plastic deformation via 3D CPFEM is how to accurately predict the deformation mechanism under the complicated contact conditions between a billet and a die. The validation by comparison with experimental observations demonstrates that the developed 3D CPFEM ECAP model is able to precisely capture the deformation characteristics at the microscale. Furthermore, this research clarified the previously remaining disputes such as the microstructural formation mechanism in the deformed area and the deformation nature in the plastic deformation zone. It is also the first time to extensively discuss the orientation-dependent deformation feature of the ECAP-processed billets, including morphology, lattice rotation angle and grain refinement.

Authors


  •   Liu, Mao (external author)
  •   Nambu, Shoichi (external author)
  •   Koseki, Toshihiko (external author)
  •   Tieu, A Kiet.
  •   Zhou, Kun (external author)

Publication Date


  • 2017

Citation


  • Liu, M., Nambu, S., Koseki, T., Tieu, K. Anh. & Zhou, K. (2017). Three-dimensional quantification of texture heterogeneity in single-crystal aluminium subjected to equal channel angular pressing. Philosophical Magazine, 97 (11), 799-819.

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/1483

Number Of Pages


  • 20

Start Page


  • 799

End Page


  • 819

Volume


  • 97

Issue


  • 11

Place Of Publication


  • United Kingdom

Abstract


  • A three-dimensional crystal plasticity finite element method (3D CPFEM) modelling of a real equal channel angular pressing (ECAP) process for investigating the mechanical properties and texture evolutions of single-crystal aluminium has been developed for the first time. The challenge of modelling such a severe plastic deformation via 3D CPFEM is how to accurately predict the deformation mechanism under the complicated contact conditions between a billet and a die. The validation by comparison with experimental observations demonstrates that the developed 3D CPFEM ECAP model is able to precisely capture the deformation characteristics at the microscale. Furthermore, this research clarified the previously remaining disputes such as the microstructural formation mechanism in the deformed area and the deformation nature in the plastic deformation zone. It is also the first time to extensively discuss the orientation-dependent deformation feature of the ECAP-processed billets, including morphology, lattice rotation angle and grain refinement.

Authors


  •   Liu, Mao (external author)
  •   Nambu, Shoichi (external author)
  •   Koseki, Toshihiko (external author)
  •   Tieu, A Kiet.
  •   Zhou, Kun (external author)

Publication Date


  • 2017

Citation


  • Liu, M., Nambu, S., Koseki, T., Tieu, K. Anh. & Zhou, K. (2017). Three-dimensional quantification of texture heterogeneity in single-crystal aluminium subjected to equal channel angular pressing. Philosophical Magazine, 97 (11), 799-819.

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/1483

Number Of Pages


  • 20

Start Page


  • 799

End Page


  • 819

Volume


  • 97

Issue


  • 11

Place Of Publication


  • United Kingdom