Investigation of the deformation behavior of Fe-3%Si sheet metal with large grains via crystal plasticity and finite-element modeling

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The purpose of this work is the modeling and simulation of the deformation behavior of thin sheets consisting of large grains of Fe-3%Si and comparison with experiment. To this end, a crystal-plasticity-based finite-element model is developed for each grain, the grain morphology, and the specimen as a whole. The crystal plasticity model itself is rate-dependent and accounts for local dissipative hardening effects. In order to compare model predictions with experiment, the material parameters have been identified with the help of single-crystal data from [1-3]. Identified model predictions are compared with the experimental results of [4] for the deformation behavior of thin sheets of Fe-3%Si loaded incrementally in tension at room temperature. To this end, attention is restricted to the two slip families {1 1 0} and {1 1 2} expected to be active at room temperature. Comparison of model predictions for grain morphological evolution with the corresponding experimental results up to 19.5% deformation on this basis imply good agreement. In addition, model predictions for the development of the strain field and the grain reorientation field are discussed and evaluated.

Original languageEnglish
JournalComputational Materials Science
Volume52
Issue number1
Pages (from-to)25-32
Number of pages8
ISSN0927-0256
DOIs
Publication statusPublished - 02.2012
Externally publishedYes

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