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Paper detail

Microstructural modeling of ductile fracture initiation in multi-phase materials

The precise mechanisms underlying the failure of multi-phase materials may be strongly dependent on the material's microstructural morphology. Micromechanical modeling has provided much insight into this dependence, but uncertainties remain about crucial modeling assumptions. This paper assesses the influence of different grain shapes, damage indicators, and stress states using a structured numerical model. A distinct spatial arrangement of phases around fracture incidents is found, consisting of hard regions in the tensile direction interrupted by soft regions in the directions of shear. These key features are only mildly sensitive to the studied variations.

preprint2016arXivOpen access
T. W. J. de GeusR. H. J. PeerlingsM. G. D. Geers
cond-mat.mtrl-sci
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T. W. J. de GeusR. H. J. PeerlingsM. G. D. Geers

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