Modeling plastic deformation of TWIP steel using cohesive zone and crystal plasticity finite element
In this research, the cohesive zone model-crystal plasticity finite element (CZM-CPFE) method was applied to reveal the influence mechanism of grain boundaries (GBs) and grains on the mechanical properties of fine/ultrafine grained TWIP steels. The reliability and efficiency of this method were veri...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-04-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525002059 |
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| author | Wang Cai Chaoyang Sun Hongjia Zhang Lingyun Qian Linghui Meng M.W. Fu |
| author_facet | Wang Cai Chaoyang Sun Hongjia Zhang Lingyun Qian Linghui Meng M.W. Fu |
| author_sort | Wang Cai |
| collection | DOAJ |
| description | In this research, the cohesive zone model-crystal plasticity finite element (CZM-CPFE) method was applied to reveal the influence mechanism of grain boundaries (GBs) and grains on the mechanical properties of fine/ultrafine grained TWIP steels. The reliability and efficiency of this method were verified via corroborating with in-situ SEM tensile tests and EBSD/TEM characterisation. When the average grain size was refined from 8.49 to 0.70 μm, the yield stress increased from 181 to 317 MPa and the ultimate tensile strength from 868 to 1004 MPa with little loss of UE, which was successfully predicted by the CZM-CPFE method. Also, the neighbouring grain model revealed that stress concentrations are pronounced near GBs with high misorientation angle due to the dislocation motion and twin growth hindered by GBs. Furthermore, the simulation and experimental results indicated that the critical resolved shear stress (CRSS) for twinning increased to 202 MPa for average grain size reduction to 0.70 μm, which was much higher than the 138.5 MPa for slip, making twin activation more difficult. The application of this work in steels with moderate grain sizes can facilitate understanding of the evolution of the slip and twins and the strain hardening. |
| format | Article |
| id | doaj-art-17c62cd674644044b18e63bbe799ed44 |
| institution | DOAJ |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-17c62cd674644044b18e63bbe799ed442025-08-20T02:50:55ZengElsevierMaterials & Design0264-12752025-04-0125211378510.1016/j.matdes.2025.113785Modeling plastic deformation of TWIP steel using cohesive zone and crystal plasticity finite elementWang Cai0Chaoyang Sun1Hongjia Zhang2Lingyun Qian3Linghui Meng4M.W. Fu5School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; Beijing Key Laboratory of Lightweight Metal Forming, Beijing 100083, PR China; Department of Mechanical Engineering, Research Institute for Advanced Manufacturing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, PR ChinaSchool of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; Beijing Key Laboratory of Lightweight Metal Forming, Beijing 100083, PR China; Corresponding authors at: School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, PR China (C. Sun).National Key Laboratory of Equipment State Sensing and Smart Support, College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, PR ChinaSchool of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; Beijing Key Laboratory of Lightweight Metal Forming, Beijing 100083, PR ChinaSchool of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; Beijing Key Laboratory of Lightweight Metal Forming, Beijing 100083, PR ChinaDepartment of Mechanical Engineering, Research Institute for Advanced Manufacturing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, PR China; Corresponding authors at: School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, PR China (C. Sun).In this research, the cohesive zone model-crystal plasticity finite element (CZM-CPFE) method was applied to reveal the influence mechanism of grain boundaries (GBs) and grains on the mechanical properties of fine/ultrafine grained TWIP steels. The reliability and efficiency of this method were verified via corroborating with in-situ SEM tensile tests and EBSD/TEM characterisation. When the average grain size was refined from 8.49 to 0.70 μm, the yield stress increased from 181 to 317 MPa and the ultimate tensile strength from 868 to 1004 MPa with little loss of UE, which was successfully predicted by the CZM-CPFE method. Also, the neighbouring grain model revealed that stress concentrations are pronounced near GBs with high misorientation angle due to the dislocation motion and twin growth hindered by GBs. Furthermore, the simulation and experimental results indicated that the critical resolved shear stress (CRSS) for twinning increased to 202 MPa for average grain size reduction to 0.70 μm, which was much higher than the 138.5 MPa for slip, making twin activation more difficult. The application of this work in steels with moderate grain sizes can facilitate understanding of the evolution of the slip and twins and the strain hardening.http://www.sciencedirect.com/science/article/pii/S0264127525002059Crystal plasticityFine and ultrafine grainCohesive zone modelGeometrically necessary dislocation densityTWIP steel |
| spellingShingle | Wang Cai Chaoyang Sun Hongjia Zhang Lingyun Qian Linghui Meng M.W. Fu Modeling plastic deformation of TWIP steel using cohesive zone and crystal plasticity finite element Materials & Design Crystal plasticity Fine and ultrafine grain Cohesive zone model Geometrically necessary dislocation density TWIP steel |
| title | Modeling plastic deformation of TWIP steel using cohesive zone and crystal plasticity finite element |
| title_full | Modeling plastic deformation of TWIP steel using cohesive zone and crystal plasticity finite element |
| title_fullStr | Modeling plastic deformation of TWIP steel using cohesive zone and crystal plasticity finite element |
| title_full_unstemmed | Modeling plastic deformation of TWIP steel using cohesive zone and crystal plasticity finite element |
| title_short | Modeling plastic deformation of TWIP steel using cohesive zone and crystal plasticity finite element |
| title_sort | modeling plastic deformation of twip steel using cohesive zone and crystal plasticity finite element |
| topic | Crystal plasticity Fine and ultrafine grain Cohesive zone model Geometrically necessary dislocation density TWIP steel |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525002059 |
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