| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
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| Symposium
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Integration between Modeling and Experiments for Crystalline Metals: From Atomistic to Macroscopic Scales IV
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| Presentation Title |
Validation of Representative Volume Element (RVE) Finite Element Models of Dual Phase Steels Using SEM In-situ Tensile Tests and Digital Image Correlation (DIC) |
| Author(s) |
Alexander Bardelcik, Quade Butler, Amin Latifi Vanjani , Hari Simha |
| On-Site Speaker (Planned) |
Alexander Bardelcik |
| Abstract Scope |
3-Dimensional representative volume element (RVE) finite element models have been developed for two grades of dual phase steels. The meso-scale RVE models are constructed using realistic grain morphology and predict the macro-scale flow stress of the steels. We further evaluate the flow stress and strain partitioning predicted by the RVE models at high strains, where damage evolution phenomena lead to ductile fracture. To validate these models, in-situ uniaxial tensile tests were conducted within a field emission scanning electron microscope. Micrographs were taken at a point within the neck of the uniaxial tensile specimens, up to local fracture strains of ~0.50. The contrast of the etched microstructure was used to quantify strain partitioning up to failure using digital image correlation. The grain level strains predicted by the RVE’s were within the range of the quantified strains and provide valuable insight into the damage/fracture performance of these steels. |