Simulation of shear banding in heterophase co-deformation: Example of plane strain compressed Cu-Ag and Cu-Nb metal matrix composites

N. Jia, F. Roters, P. Eisenlohr, D. Raabe, X. Zhao

Research output: Contribution to journalArticle

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Abstract

The co-deformation and shear localization in heterophase alloys is studied using two-dimensional crystal plasticity finite element simulations on plane strain compressed Cu-Ag and Cu-Nb metal matrix composites. The aim is to study the fundamentals of micromechanics, co-deformation and shear banding in materials with heterophase interfaces. It is observed that, depending on the initial orientations of the crystals, co-deformation of the constituent heterophases often proceeds via collective mechanisms, i.e. by pronounced shear banding triggered by stress concentration at the interfaces. This phenomenon leads to highly localized strains within the bands, exceeding the average strain in part by two orders of magnitude. Shear band development is related to the inherent mechanical properties of each crystal and also to the properties of the abutting crystals. The predicted topology and nature of the cross-phase shear bands, i.e. the extreme local strains, significant bending of the interface regions, and sharp strain localization that propagates across the interfaces, agree well with experimental observations in cold-rolled composites. The simulations reveal that cross-phase shear banding leads to large and highly localized values of stress and strain at heterophase interfaces. Such information is essential for a better understanding of the micromechanical boundary conditions inside co-deformed composites and the associated shear-induced chemical mixing.

Original languageEnglish (US)
Pages (from-to)4591-4606
Number of pages16
JournalActa Materialia
Volume61
Issue number12
DOIs
StatePublished - Jul 2013
Externally publishedYes

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Carbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing)
Carbamyl Phosphate
Carcinoid Tumor
Composite materials
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Enzyme Reactivators
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Differential Scanning Calorimetry
Crystal orientation
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Keywords

  • Crystal plasticity finite element analysis
  • Metal matrix composites
  • Shear band
  • Stress

ASJC Scopus subject areas

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

Cite this

Simulation of shear banding in heterophase co-deformation : Example of plane strain compressed Cu-Ag and Cu-Nb metal matrix composites. / Jia, N.; Roters, F.; Eisenlohr, P.; Raabe, D.; Zhao, X.

In: Acta Materialia, Vol. 61, No. 12, 07.2013, p. 4591-4606.

Research output: Contribution to journalArticle

Jia, N.; Roters, F.; Eisenlohr, P.; Raabe, D.; Zhao, X. / Simulation of shear banding in heterophase co-deformation : Example of plane strain compressed Cu-Ag and Cu-Nb metal matrix composites.

In: Acta Materialia, Vol. 61, No. 12, 07.2013, p. 4591-4606.

Research output: Contribution to journalArticle

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