Observation of the formation and sharpening of geometrically necessary boundaries
We present in-situ visualisation of incidental dislocation boundaries (IDBs) and geometrically necessary boundaries (GNBs) in single-crystal aluminium under tensile load along [111]. Below 5.10% strain, plastic deformation manifests through the stochastic formation of IDBs. GNBs emerge abruptly betw...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-07-01
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| Series: | Materials Research Letters |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2025.2511893 |
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| author | Adam André William Cretton Albert Zelenika Felix Frankus Can Yıldırım Carsten Detlefs Flemming Bjerg Grumsen Grethe Winther Henning Friis Poulsen |
| author_facet | Adam André William Cretton Albert Zelenika Felix Frankus Can Yıldırım Carsten Detlefs Flemming Bjerg Grumsen Grethe Winther Henning Friis Poulsen |
| author_sort | Adam André William Cretton |
| collection | DOAJ |
| description | We present in-situ visualisation of incidental dislocation boundaries (IDBs) and geometrically necessary boundaries (GNBs) in single-crystal aluminium under tensile load along [111]. Below 5.10% strain, plastic deformation manifests through the stochastic formation of IDBs. GNBs emerge abruptly between 5.15 and 5.20% strain, forming along pre-existing dislocation structures and aligning with slip traces, as confirmed by autocorrelation analysis. This transition occurs across tens of micrometers. Orientation and dislocation density mapping reveal that strain accommodation occurs through boundary sharpening, dislocation migration, and elastic energy release. These findings provide insights into dislocation patterning mechanisms and establish a foundation for refining physics-based plasticity models. |
| format | Article |
| id | doaj-art-1b3eaf87dde146e08d2f3fc8c5ea1b2b |
| institution | DOAJ |
| issn | 2166-3831 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj-art-1b3eaf87dde146e08d2f3fc8c5ea1b2b2025-08-20T03:16:16ZengTaylor & Francis GroupMaterials Research Letters2166-38312025-07-0113775976710.1080/21663831.2025.2511893Observation of the formation and sharpening of geometrically necessary boundariesAdam André William Cretton0Albert Zelenika1Felix Frankus2Can Yıldırım3Carsten Detlefs4Flemming Bjerg Grumsen5Grethe Winther6Henning Friis Poulsen7Department of Physics, Technical University of Denmark, Lyngby, DenmarkDepartment of Physics, Technical University of Denmark, Lyngby, DenmarkDepartment of Civil and Mechanical Engineering, Technical University of Denmark, Lyngby, DenmarkEuropean Synchrotron Radiation Facility, Grenoble, FranceEuropean Synchrotron Radiation Facility, Grenoble, FranceDepartment of Civil and Mechanical Engineering, Technical University of Denmark, Lyngby, DenmarkDepartment of Civil and Mechanical Engineering, Technical University of Denmark, Lyngby, DenmarkDepartment of Physics, Technical University of Denmark, Lyngby, DenmarkWe present in-situ visualisation of incidental dislocation boundaries (IDBs) and geometrically necessary boundaries (GNBs) in single-crystal aluminium under tensile load along [111]. Below 5.10% strain, plastic deformation manifests through the stochastic formation of IDBs. GNBs emerge abruptly between 5.15 and 5.20% strain, forming along pre-existing dislocation structures and aligning with slip traces, as confirmed by autocorrelation analysis. This transition occurs across tens of micrometers. Orientation and dislocation density mapping reveal that strain accommodation occurs through boundary sharpening, dislocation migration, and elastic energy release. These findings provide insights into dislocation patterning mechanisms and establish a foundation for refining physics-based plasticity models.https://www.tandfonline.com/doi/10.1080/21663831.2025.2511893Dark-field X-ray microscopydislocation boundariesgeometrically necessary boundariesaluminiumin-situ observation |
| spellingShingle | Adam André William Cretton Albert Zelenika Felix Frankus Can Yıldırım Carsten Detlefs Flemming Bjerg Grumsen Grethe Winther Henning Friis Poulsen Observation of the formation and sharpening of geometrically necessary boundaries Materials Research Letters Dark-field X-ray microscopy dislocation boundaries geometrically necessary boundaries aluminium in-situ observation |
| title | Observation of the formation and sharpening of geometrically necessary boundaries |
| title_full | Observation of the formation and sharpening of geometrically necessary boundaries |
| title_fullStr | Observation of the formation and sharpening of geometrically necessary boundaries |
| title_full_unstemmed | Observation of the formation and sharpening of geometrically necessary boundaries |
| title_short | Observation of the formation and sharpening of geometrically necessary boundaries |
| title_sort | observation of the formation and sharpening of geometrically necessary boundaries |
| topic | Dark-field X-ray microscopy dislocation boundaries geometrically necessary boundaries aluminium in-situ observation |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2025.2511893 |
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