Interaction between the edge dislocation dipole pair and interfacial misfit dislocation network in Ni-based single crystal superalloys
Understanding the intrinsic strengthening mechanism is of great significance for microstructural design of Ni-based single crystal superalloys. In this paper, from an atomistic perspective, the interacting mechanism between edge dislocation dipole pair and interfacial misfit dislocation network has...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Journal Article |
| Language: | English |
| Published: |
PERGAMON-ELSEVIER SCIENCE LTD
2021
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/86215 |
| _version_ | 1848764793354190848 |
|---|---|
| author | Zhang, Z. Fu, Q. Wang, J. Yang, R. Xiao, P. Ke, F. Lu, Chunsheng |
| author_facet | Zhang, Z. Fu, Q. Wang, J. Yang, R. Xiao, P. Ke, F. Lu, Chunsheng |
| author_sort | Zhang, Z. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Understanding the intrinsic strengthening mechanism is of great significance for microstructural design of Ni-based single crystal superalloys. In this paper, from an atomistic perspective, the interacting mechanism between edge dislocation dipole pair and interfacial misfit dislocation network has been elaborated. It is shown that a network of interfacial misfit dislocations can effectively impede the movement of matrix dislocations, accommodate and pile up the edge dislocation dipole pairs in Ni matrix. Furthermore, we have systematically elucidated the influence of loading rates on the stimulating period of edge dislocation dipole pairs and stiffness of Ni/Ni3Al substrate. These findings provide a better understanding of the interfacial strengthening mechanism of Ni-based single crystal superalloys. |
| first_indexed | 2025-11-14T11:25:00Z |
| format | Journal Article |
| id | curtin-20.500.11937-86215 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:25:00Z |
| publishDate | 2021 |
| publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-862152021-11-19T05:40:20Z Interaction between the edge dislocation dipole pair and interfacial misfit dislocation network in Ni-based single crystal superalloys Zhang, Z. Fu, Q. Wang, J. Yang, R. Xiao, P. Ke, F. Lu, Chunsheng Science & Technology Technology Mechanics Ni-based single crystal superalloys Edge dislocation dipole pair Interfacial misfit dislocation network Interacting mechanism Molecular dynamics MOLECULAR-DYNAMICS SIMULATION MICROSTRUCTURE EVOLUTION PLASTIC-DEFORMATION NI/NI3AL INTERFACE LATTICE MISFIT LOADING RATE STRENGTH NI3AL BEHAVIOR MOTION Understanding the intrinsic strengthening mechanism is of great significance for microstructural design of Ni-based single crystal superalloys. In this paper, from an atomistic perspective, the interacting mechanism between edge dislocation dipole pair and interfacial misfit dislocation network has been elaborated. It is shown that a network of interfacial misfit dislocations can effectively impede the movement of matrix dislocations, accommodate and pile up the edge dislocation dipole pairs in Ni matrix. Furthermore, we have systematically elucidated the influence of loading rates on the stimulating period of edge dislocation dipole pairs and stiffness of Ni/Ni3Al substrate. These findings provide a better understanding of the interfacial strengthening mechanism of Ni-based single crystal superalloys. 2021 Journal Article http://hdl.handle.net/20.500.11937/86215 10.1016/j.ijsolstr.2021.111128 English PERGAMON-ELSEVIER SCIENCE LTD restricted |
| spellingShingle | Science & Technology Technology Mechanics Ni-based single crystal superalloys Edge dislocation dipole pair Interfacial misfit dislocation network Interacting mechanism Molecular dynamics MOLECULAR-DYNAMICS SIMULATION MICROSTRUCTURE EVOLUTION PLASTIC-DEFORMATION NI/NI3AL INTERFACE LATTICE MISFIT LOADING RATE STRENGTH NI3AL BEHAVIOR MOTION Zhang, Z. Fu, Q. Wang, J. Yang, R. Xiao, P. Ke, F. Lu, Chunsheng Interaction between the edge dislocation dipole pair and interfacial misfit dislocation network in Ni-based single crystal superalloys |
| title | Interaction between the edge dislocation dipole pair and interfacial misfit dislocation network in Ni-based single crystal superalloys |
| title_full | Interaction between the edge dislocation dipole pair and interfacial misfit dislocation network in Ni-based single crystal superalloys |
| title_fullStr | Interaction between the edge dislocation dipole pair and interfacial misfit dislocation network in Ni-based single crystal superalloys |
| title_full_unstemmed | Interaction between the edge dislocation dipole pair and interfacial misfit dislocation network in Ni-based single crystal superalloys |
| title_short | Interaction between the edge dislocation dipole pair and interfacial misfit dislocation network in Ni-based single crystal superalloys |
| title_sort | interaction between the edge dislocation dipole pair and interfacial misfit dislocation network in ni-based single crystal superalloys |
| topic | Science & Technology Technology Mechanics Ni-based single crystal superalloys Edge dislocation dipole pair Interfacial misfit dislocation network Interacting mechanism Molecular dynamics MOLECULAR-DYNAMICS SIMULATION MICROSTRUCTURE EVOLUTION PLASTIC-DEFORMATION NI/NI3AL INTERFACE LATTICE MISFIT LOADING RATE STRENGTH NI3AL BEHAVIOR MOTION |
| url | http://hdl.handle.net/20.500.11937/86215 |