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Micromechanical impact of solidification regions in ductile iron revealed via a 3D strain partitioning analysis method
Strain partitioning between first-to-solidify (FTS) and last-to-solidify (LTS) regions upon tensile loading of ductile iron was investigated by combining in-situ X-ray tomography with digital volume correlation and postmortem metallographic examinations. The results indicate that the plastic shear b...
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| Published in: | Scripta materialia 2020-03, Vol.178, p.463-467 |
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| Main Authors: | , , , , , |
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| Language: | English |
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| container_end_page | 467 |
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| container_start_page | 463 |
| container_title | Scripta materialia |
| container_volume | 178 |
| creator | Xu, C.L. Andriollo, T. Zhang, Y.B. Hernando, J.C. Hattel, J. Tiedje, N. |
| description | Strain partitioning between first-to-solidify (FTS) and last-to-solidify (LTS) regions upon tensile loading of ductile iron was investigated by combining in-situ X-ray tomography with digital volume correlation and postmortem metallographic examinations. The results indicate that the plastic shear bands form mainly by linking graphite particles contained in the same FTS region. A special distance function is introduced to show that this is due to the lower strength of the FTS regions compared to the LTS regions, but also to the higher stress concentration associated with the particles. The methodology is general and therefore extendable to material systems containing similar microstructural heterogeneities.
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| doi_str_mv | 10.1016/j.scriptamat.2019.12.018 |
| format | article |
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The results indicate that the plastic shear bands form mainly by linking graphite particles contained in the same FTS region. A special distance function is introduced to show that this is due to the lower strength of the FTS regions compared to the LTS regions, but also to the higher stress concentration associated with the particles. The methodology is general and therefore extendable to material systems containing similar microstructural heterogeneities.
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| ispartof | Scripta materialia, 2020-03, Vol.178, p.463-467 |
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| language | eng |
| recordid | cdi_swepub_primary_oai_DiVA_org_hj_47215 |
| source | ScienceDirect Freedom Collection 2022-2024 |
| subjects | Cast iron Digital volume correlation Digital volume correlations Distance functions Ductility Graphite particles Metallographic examination Micromechanics Microstructural heterogeneity Solidification Solidification microstructure Solidification microstructures Strain distribution Strain distributions Strain measurement Strain partitioning |
| title | Micromechanical impact of solidification regions in ductile iron revealed via a 3D strain partitioning analysis method |
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