Non-crystallographic shear banding in crystal plasticity FEM simulations: Example of texture evolution in α-brass

N. Jia, F. Roters, P. Eisenlohr, C. Kords, D. Raabe

Research output: Research - peer-reviewArticle

  • 30 Citations

Abstract

We present crystal plasticity finite element simulations of the texture evolution in α-brass polycrystals under plane strain compression. The novelty is a non-crystallographic shear band mechanism [Anand L, Su C. J Mech Phys Solids 2005;53:1362] that is incorporated into the constitutive model in addition to dislocation and twinning. Non-crystallographic deformation associated with shear banding leads to weaker copper and S texture components and to a stronger brass texture compared to simulations enabling slip and twinning only. The lattice rotation rates are reduced when shear banding occurs. This effect leads to a weaker copper component. Also, the initiation of shear banding promotes brass-type components. In summary the occurrence of non-crystallographic deformation through shear bands shifts face-centered-cubic deformation textures from the copper type to the brass type.

LanguageEnglish (US)
Pages1099-1115
Number of pages17
JournalActa Materialia
Volume60
Issue number3
DOIs
StatePublished - Feb 2012
Externally publishedYes

Profile

Brass
Plasticity
Textures
Finite element method
Crystals
brass
Copper
Shear bands
Twinning
Polycrystals
Constitutive models
Dislocations (crystals)
Crystal lattices
Compaction

Keywords

  • Finite element analysis
  • Shear bands
  • Texture

ASJC Scopus subject areas

  • Ceramics and Composites
  • Metals and Alloys
  • Polymers and Plastics
  • Electronic, Optical and Magnetic Materials

Cite this

Non-crystallographic shear banding in crystal plasticity FEM simulations : Example of texture evolution in α-brass. / Jia, N.; Roters, F.; Eisenlohr, P.; Kords, C.; Raabe, D.

In: Acta Materialia, Vol. 60, No. 3, 02.2012, p. 1099-1115.

Research output: Research - peer-reviewArticle

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