Bicrystal-based modeling of plasticity in FCC metals

B. J. Lee, Said Ahzi, D. M. Parks

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

In this paper, intermediate modeling of polycrystalline plasticity is proposed for rigid viscoplatic large deformations. This approach is based on the use of a bicrystal as the elementary local element representing the poly-crystal. The local homogenization is obtained by considering the bicrystal volume-averaging and the jump conditions at the assumed planar interface between the two crystals. Two interaction laws based on Taylor and Sachs type assumptions are proposed. These bicrystal-based averaging schemes are different from the classical Taylor and Sachs models since they allow for stresses and strains to vary from one single crystal to the other. We simulate uniaxial tension and compression as well as plane strain compression tests. Results in terms of stress-strain curves are shown in comparison to those of the pure Taylor and Sachs models. We also show results for texture evolution and discuss their comparison with the experimental measurements.

Original languageEnglish
Pages (from-to)27-40
Number of pages14
JournalJournal of Engineering Materials and Technology, Transactions of the ASME
Volume124
Issue number1
DOIs
Publication statusPublished - Jan 2002
Externally publishedYes

Fingerprint

Bicrystals
bicrystals
plastic properties
Plasticity
Metals
metals
Crystals
compression tests
plane strain
Stress-strain curves
homogenizing
crystals
textures
Textures
Single crystals
single crystals
curves
interactions

ASJC Scopus subject areas

  • Mechanical Engineering
  • Materials Science(all)

Cite this

Bicrystal-based modeling of plasticity in FCC metals. / Lee, B. J.; Ahzi, Said; Parks, D. M.

In: Journal of Engineering Materials and Technology, Transactions of the ASME, Vol. 124, No. 1, 01.2002, p. 27-40.

Research output: Contribution to journalArticle

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