Efficient Crystal Plasticity Modeling of Lath Martensite Considering Block Boundary Effects
An efficient extension of conventional rate-dependent crystal plasticity is formulated to include the influence of block boundaries in lath martensite. It is shown that this can be achieved by minor modifications to a conventional crystal plasticity model, providing an efficient modeling approach wi...
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MDPI AG
2025-04-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/15/4/435 |
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| author | Sally Issa Håkan Hallberg Mathias Wallin Matti Ristinmaa |
| author_facet | Sally Issa Håkan Hallberg Mathias Wallin Matti Ristinmaa |
| author_sort | Sally Issa |
| collection | DOAJ |
| description | An efficient extension of conventional rate-dependent crystal plasticity is formulated to include the influence of block boundaries in lath martensite. It is shown that this can be achieved by minor modifications to a conventional crystal plasticity model, providing an efficient modeling approach with a negligible additional computational cost. With this modification, the parameter related to lattice friction is made dependent on a Hall–Petch-type block size dependency, resulting in block strengthening. The boundaries are modeled as obstacles which restrict the motion of dislocations, resulting in lower slip activity and promoting dislocation accumulation close to the boundaries. The model is calibrated and validated using experimental data from the literature, and its capabilities are demonstrated in a series of simulation examples. |
| format | Article |
| id | doaj-art-3e00cb699e9a4deaa682faa9df2cf7e7 |
| institution | OA Journals |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj-art-3e00cb699e9a4deaa682faa9df2cf7e72025-08-20T02:28:41ZengMDPI AGMetals2075-47012025-04-0115443510.3390/met15040435Efficient Crystal Plasticity Modeling of Lath Martensite Considering Block Boundary EffectsSally Issa0Håkan Hallberg1Mathias Wallin2Matti Ristinmaa3Division of Solid Mechanics, Lund University, P.O. Box 118, SE-221 00 Lund, SwedenDivision of Solid Mechanics, Lund University, P.O. Box 118, SE-221 00 Lund, SwedenDivision of Solid Mechanics, Lund University, P.O. Box 118, SE-221 00 Lund, SwedenDivision of Solid Mechanics, Lund University, P.O. Box 118, SE-221 00 Lund, SwedenAn efficient extension of conventional rate-dependent crystal plasticity is formulated to include the influence of block boundaries in lath martensite. It is shown that this can be achieved by minor modifications to a conventional crystal plasticity model, providing an efficient modeling approach with a negligible additional computational cost. With this modification, the parameter related to lattice friction is made dependent on a Hall–Petch-type block size dependency, resulting in block strengthening. The boundaries are modeled as obstacles which restrict the motion of dislocations, resulting in lower slip activity and promoting dislocation accumulation close to the boundaries. The model is calibrated and validated using experimental data from the literature, and its capabilities are demonstrated in a series of simulation examples.https://www.mdpi.com/2075-4701/15/4/435lath martensitecrystal plasticityblock size strengthening |
| spellingShingle | Sally Issa Håkan Hallberg Mathias Wallin Matti Ristinmaa Efficient Crystal Plasticity Modeling of Lath Martensite Considering Block Boundary Effects Metals lath martensite crystal plasticity block size strengthening |
| title | Efficient Crystal Plasticity Modeling of Lath Martensite Considering Block Boundary Effects |
| title_full | Efficient Crystal Plasticity Modeling of Lath Martensite Considering Block Boundary Effects |
| title_fullStr | Efficient Crystal Plasticity Modeling of Lath Martensite Considering Block Boundary Effects |
| title_full_unstemmed | Efficient Crystal Plasticity Modeling of Lath Martensite Considering Block Boundary Effects |
| title_short | Efficient Crystal Plasticity Modeling of Lath Martensite Considering Block Boundary Effects |
| title_sort | efficient crystal plasticity modeling of lath martensite considering block boundary effects |
| topic | lath martensite crystal plasticity block size strengthening |
| url | https://www.mdpi.com/2075-4701/15/4/435 |
| work_keys_str_mv | AT sallyissa efficientcrystalplasticitymodelingoflathmartensiteconsideringblockboundaryeffects AT hakanhallberg efficientcrystalplasticitymodelingoflathmartensiteconsideringblockboundaryeffects AT mathiaswallin efficientcrystalplasticitymodelingoflathmartensiteconsideringblockboundaryeffects AT mattiristinmaa efficientcrystalplasticitymodelingoflathmartensiteconsideringblockboundaryeffects |