Phase field simulation of α/β microstructure in titanium alloy welds
The microstructure formation during $\beta \to \alpha +\beta $ transformation in heat affected zone of titanium alloy welds is studied using an approach combining a phase field solid-solid transformation model with a heat transfer finite element method (FEM). FEM is used to model macroscopic heat tr...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ab875a |
| _version_ | 1827868762972356608 |
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| author | Rajeev Ahluwalia Robert Laskowski Nathaniel Ng Mark Wong Siu Sin Quek David T Wu |
| author_facet | Rajeev Ahluwalia Robert Laskowski Nathaniel Ng Mark Wong Siu Sin Quek David T Wu |
| author_sort | Rajeev Ahluwalia |
| collection | DOAJ |
| description | The microstructure formation during $\beta \to \alpha +\beta $ transformation in heat affected zone of titanium alloy welds is studied using an approach combining a phase field solid-solid transformation model with a heat transfer finite element method (FEM). FEM is used to model macroscopic heat transfer during welding cycle and to compute the thermal history at several points across the weld. The thermal history is subsequently used as input to the phase field model describing microstructure evolution. The chemical component of Gibbs free energy, atomic mobility and elastic tensors are parameterized for Ti–6Al–4V using available literature data. A classical nucleation theory based model is parameterized using recent continuous cooling experiments and is used to account for nucleation events. The study explains the graded microstructures observed in titanium alloy welds and provides insights into the underlying processes that occur during welding. |
| first_indexed | 2024-03-12T15:36:01Z |
| format | Article |
| id | doaj.art-1a9e7a31c4454845b0cb3c6c9a1b4db6 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:36:01Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-1a9e7a31c4454845b0cb3c6c9a1b4db62023-08-09T16:11:55ZengIOP PublishingMaterials Research Express2053-15912020-01-017404651710.1088/2053-1591/ab875aPhase field simulation of α/β microstructure in titanium alloy weldsRajeev Ahluwalia0https://orcid.org/0000-0001-5807-1491Robert Laskowski1Nathaniel Ng2https://orcid.org/0000-0003-3988-5275Mark Wong3Siu Sin Quek4https://orcid.org/0000-0002-8181-9485David T Wu5Institute of High Performance Computing, 138632, SingaporeInstitute of High Performance Computing, 138632, SingaporeInstitute of High Performance Computing, 138632, SingaporeInstitute of High Performance Computing, 138632, SingaporeInstitute of High Performance Computing, 138632, SingaporeInstitute of High Performance Computing, 138632, SingaporeThe microstructure formation during $\beta \to \alpha +\beta $ transformation in heat affected zone of titanium alloy welds is studied using an approach combining a phase field solid-solid transformation model with a heat transfer finite element method (FEM). FEM is used to model macroscopic heat transfer during welding cycle and to compute the thermal history at several points across the weld. The thermal history is subsequently used as input to the phase field model describing microstructure evolution. The chemical component of Gibbs free energy, atomic mobility and elastic tensors are parameterized for Ti–6Al–4V using available literature data. A classical nucleation theory based model is parameterized using recent continuous cooling experiments and is used to account for nucleation events. The study explains the graded microstructures observed in titanium alloy welds and provides insights into the underlying processes that occur during welding.https://doi.org/10.1088/2053-1591/ab875atitanium alloysweldingmicrostructurephase transformationphase field model |
| spellingShingle | Rajeev Ahluwalia Robert Laskowski Nathaniel Ng Mark Wong Siu Sin Quek David T Wu Phase field simulation of α/β microstructure in titanium alloy welds Materials Research Express titanium alloys welding microstructure phase transformation phase field model |
| title | Phase field simulation of α/β microstructure in titanium alloy welds |
| title_full | Phase field simulation of α/β microstructure in titanium alloy welds |
| title_fullStr | Phase field simulation of α/β microstructure in titanium alloy welds |
| title_full_unstemmed | Phase field simulation of α/β microstructure in titanium alloy welds |
| title_short | Phase field simulation of α/β microstructure in titanium alloy welds |
| title_sort | phase field simulation of α β microstructure in titanium alloy welds |
| topic | titanium alloys welding microstructure phase transformation phase field model |
| url | https://doi.org/10.1088/2053-1591/ab875a |
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