A dislocation density-based crystal plasticity constitutive model for prismatic slip in α-titanium

Alankar Alankar, Philip Eisenlohr, Dierk Raabe

Research output: Contribution to journalArticle

  • 28 Citations

Abstract

A new constitutive plasticity model for prismatic slip in hexagonal α-titanium is developed. In the concept pure edge and screw dislocation densities evolve on the {101̄0}〈12̄10〉 slip systems. The model considers that the screw dislocation segments have a spread out core, leading to a much higher velocity of edge compared with screw dislocations. This enables the model to describe the observed transition in strain hardening from stage I to stage II in single crystals oriented for prismatic slip. Good agreement is found between the experimentally observed and simulated stress-strain behavior.

Original languageEnglish (US)
Pages (from-to)7003-7009
Number of pages7
JournalActa Materialia
Volume59
Issue number18
DOIs
StatePublished - Oct 2011
Externally publishedYes

Profile

Sperm Immobilizing Agents
Anthralin
Screw dislocations
Cinanserin
Plasticity
Titanium
Carbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing)
Amino Acid Chloromethyl Ketones
Acetyl-CoA Hydrolase
Echinomycin
Erythrocyte Inclusions
Sperm Head
Addison Disease
Carcinoid Tumor
Dislocations (crystals)
Edge dislocations
Constitutive models
Strain hardening
Crystals

Keywords

  • Crystal plasticity
  • Dislocations
  • Single crystal
  • Titanium

ASJC Scopus subject areas

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

Cite this

A dislocation density-based crystal plasticity constitutive model for prismatic slip in α-titanium. / Alankar, Alankar; Eisenlohr, Philip; Raabe, Dierk.

In: Acta Materialia, Vol. 59, No. 18, 10.2011, p. 7003-7009.

Research output: Contribution to journalArticle

Alankar, Alankar; Eisenlohr, Philip; Raabe, Dierk / A dislocation density-based crystal plasticity constitutive model for prismatic slip in α-titanium.

In: Acta Materialia, Vol. 59, No. 18, 10.2011, p. 7003-7009.

Research output: Contribution to journalArticle

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