Non-linear viscoplastic polycrystalline intermediate modelling for texture evolution in FCC metals

Compression test

Said Ahzi, S. M'Guil, H. Youssef, M. Khaleel, J. Gracio

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this paper, we report predicted results for texture evolution in FCC metals under uniaxial compression test. These results are computed using a newly developed nonlinear rigid viscoplastic crystal plasticity model based on an intermediate interaction law. This interaction law is formulated by the minimization of a normalized error function which combines the local fields' deviations, from the macroscopic ones, obtained by the classical upper bound (Taylor) and lower bound (Sachs) models. This interaction law leads to results lying between the upper and lower bound approaches by simply varying a scalar weight function φ(0 < φ <1). A simple interaction law based on the linear mixture of the fields from the Taylor and Sachs models is also used. The results from these both the linear and nonlinear intermediate approaches are shown in terms of texture evolution under uniaxial compression. These results are discussed in comparison with the well known experimental textures in compressed FCC metals. Finally, we show that the linear intermediate approach yields fairly acceptable texture predictions under compression and that the fully non-linear approach predicts much better results.

Original languageEnglish
Pages (from-to)533-537
Number of pages5
JournalMaterialwissenschaft und Werkstofftechnik
Volume36
Issue number10
DOIs
Publication statusPublished - 1 Oct 2005
Externally publishedYes

Fingerprint

compression tests
textures
Textures
Metals
metals
interactions
Weights and Measures
error functions
plastic properties
Plasticity
scalars
deviation
Crystals
optimization
predictions
crystals

Keywords

  • Crystallographic Texture
  • Intermediate linear and non-linear models
  • Polycrystalline plasticity

ASJC Scopus subject areas

  • Materials Science(all)
  • Biotechnology
  • Biochemistry

Cite this

Non-linear viscoplastic polycrystalline intermediate modelling for texture evolution in FCC metals : Compression test. / Ahzi, Said; M'Guil, S.; Youssef, H.; Khaleel, M.; Gracio, J.

In: Materialwissenschaft und Werkstofftechnik, Vol. 36, No. 10, 01.10.2005, p. 533-537.

Research output: Contribution to journalArticle

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