Finite element modelling and diffraction measurement of elastic strains during tensile deformation of HCP polycrystals

Xu Song, Shu Yan Zhang, Daniele Dini, Alexander M. Korsunsky

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

In this paper a 3D, elastically anisotropic crystal-plasticity based constitutive model is used to describe cyclic deformation and hardening of polycrystalline HCP (hexagonal close-packed) materials. A diffraction post-processor is developed to allow critical assessment of model predictions against XRD data. Model results for titanium alloy Ti-6Al-4V are compared with synchrotron high energy X-ray polycrystalline diffraction data. The significance of elastic anisotropy and three-dimensionality of the model is discussed.

Original languageEnglish
Pages (from-to)131-137
Number of pages7
JournalComputational Materials Science
Volume44
Issue number1
DOIs
Publication statusPublished - Nov 2008
Externally publishedYes

Keywords

  • Crystal plasticity
  • Elastic anisotropy
  • HCP
  • Model validation
  • X-ray diffraction

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