Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106762
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | en_US |
dc.creator | Guo, X | en_US |
dc.creator | Sun, C | en_US |
dc.creator | Wang, C | en_US |
dc.creator | Jiang, J | en_US |
dc.creator | Fu, MW | en_US |
dc.date.accessioned | 2024-06-03T02:24:14Z | - |
dc.date.available | 2024-06-03T02:24:14Z | - |
dc.identifier.issn | 0749-6419 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/106762 | - |
dc.language.iso | en | en_US |
dc.publisher | Pergamon Press | en_US |
dc.rights | © 2021 Elsevier Ltd. All rights reserved. | en_US |
dc.rights | © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. | en_US |
dc.rights | The following publication Guo, X., Sun, C., Wang, C., Jiang, J., & Fu, M. W. (2021). Study of dislocation-twin boundary interaction mechanisms in plastic deformation of TWIP steel by discrete dislocation dynamics and dislocation density-based modeling. International Journal of Plasticity, 145, 103076 is available at https://doi.org/10.1016/j.ijplas.2021.103076. | en_US |
dc.subject | Deformation twins | en_US |
dc.subject | Discrete dislocation dynamics | en_US |
dc.subject | Dislocation density | en_US |
dc.subject | Dislocation-TB interaction | en_US |
dc.subject | TWIP steel | en_US |
dc.title | Study of dislocation-twin boundary interaction mechanisms in plastic deformation of twip steel by discrete dislocation dynamics and dislocation density-based modeling | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 145 | en_US |
dc.identifier.doi | 10.1016/j.ijplas.2021.103076 | en_US |
dcterms.abstract | Deformation twins contribute to the unique deformation behaviors and characteristics in the plastic deformation of TWIP steels since twin boundary (TB) blocks the movement of dislocations and absorbs them in deformation process. On the other hand, dislocations can traverse TB. However, there is still no consensus on how TB influences the plastic deformation of TWIP steels among prior researches. Therefore, exploring the interaction between dislocation and TB is critical to understand the effects of twins on the macro deformation behaviors and exploit the strengthening potential of the alloys. In this study, a dislocation-TB interactions model for TWIP steel was proposed, developed and implemented in discrete dislocation dynamics (DDD) simulation, the complicated dislocation reactions at the TB were determined by the energy criterion, which serves as a feasible approach to represent the micro deformation characteristics under different tension directions with respect to the twin plane normal of TWIP steel micropillar. Furthermore, the effect of dislocation type and reaction characteristic at the TB in DDD are incorporated into the conventional dislocation density-based (DDB) model, and then the improved DDB model is used to quantitatively describe the macro plastic behavior of TWIP steel micropillar. The DDD simulation results show that the dislocation-TB interactions are related to the dislocation type and the angular relationship between loading direction and twin plane normal. The TB has a significant strengthening effect if the loading direction is perpendicular to the twin plane (0°) due to the increase of the back stress induced by the activated 60° dislocation pileups. For other orientations (45° and 90°), however, the strain hardening becomes negligible. Meanwhile, the stress and dislocation density-strain curves under different directions with respect to the twin plane normal are predicted by the improved DDB model and have a good agreement with the DDD simulation and experimental results. The research thus advances the understanding of dislocation-TB interaction mechanisms in plastic deformation of TWIP steels. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | International journal of plasticity, Oct. 2021, v. 145, 103076 | en_US |
dcterms.isPartOf | International journal of plasticity | en_US |
dcterms.issued | 2021-10 | - |
dc.identifier.scopus | 2-s2.0-85112650444 | - |
dc.identifier.artn | 103076 | en_US |
dc.description.validate | 202405 bcwh | en_US |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ME-0020 | - |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | National Natural Science Foundation of China (NSFC); International Exchanges Scheme of NSFC and Royal Society; Joint Foundation of NSFC and China Academy of Engineering Physics; China National Key Laboratory Foundation of Science and Technology on Materials under Shock and Impact | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 55323088 | - |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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Fu_Study_Dislocation-Twin_Boundary.pdf | Pre-Published version | 3.2 MB | Adobe PDF | View/Open |
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