Phenomenological modeling of anisotropy induced by evolution of the dislocation structure on the macroscopic and microscopic scale

Till Clausmeyer, Antonius H. van den Boogaard, Mohammad Noman, Gregoriy Gershteyn, Mirko Schaper, Bob Svendsen, Swantje Bargmann

Research output: Contribution to journalArticleAcademicpeer-review

16 Citations (Scopus)
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Abstract

This work focuses on the modeling of the evolution of anisotropy induced by the development of the dislocation microstructure. A model formulated at the engineering scale in the context of classical metal plasticity and a model formulated in the context of crystal plasticity are presented. Images obtained by transmission-electron microscopy (TEM) show the influence of the strain path on the evolution of anisotropy for the case of two common materials used in sheet metal forming, DC06 and AA6016-T4. Both models are capable of accounting for the transient behavior observed after changes in loading path for fcc and bcc metals. The evolution of the internal variables of the models is correlated with the evolution of the dislocation structure observed by TEM investigations.
Original languageEnglish
Pages (from-to)141-154
JournalInternational journal of material forming
Volume4
Issue number2
DOIs
Publication statusPublished - 2011

Keywords

  • Material modeling
  • Microstructural evolution
  • Cross hardening
  • Induced flow anisotropy

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