Transformations with inhomogeneous nucleation and growth velocity
The major part of solid-state transformations modeling has concentrated on transformations taking place from a homogeneous matrix. Nonetheless, there are situations in which one finds an inhomogeneous matrix. An example is the recrystallization of metals subjected to an inhomogeneous deformation. If...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785420314654 |
| _version_ | 1819010917156782080 |
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| author | Mariana Sizenando Lyrio Gabriella Maria Silveira de Sá Harison da Silva Ventura Weslley Luiz da Silva Assis Elena Villa Paulo Rangel Rios |
| author_facet | Mariana Sizenando Lyrio Gabriella Maria Silveira de Sá Harison da Silva Ventura Weslley Luiz da Silva Assis Elena Villa Paulo Rangel Rios |
| author_sort | Mariana Sizenando Lyrio |
| collection | DOAJ |
| description | The major part of solid-state transformations modeling has concentrated on transformations taking place from a homogeneous matrix. Nonetheless, there are situations in which one finds an inhomogeneous matrix. An example is the recrystallization of metals subjected to an inhomogeneous deformation. If the recrystallization takes place in the regions where the stored energy of cold work is high, one has both a higher number of nuclei and faster growth velocity than in the region where the stored energy is low. In this work, we conduct computer simulations of transformations of a matrix possessing inhomogeneous nucleation and growth. We compare the computer simulations with an analytical solution that considers at the same time both the variation of the number of nuclei and the velocity. These results are compared with results obtained when only inhomogeneous nucleation is considered, whereas the velocity is kept constant throughout the matrix. For the number of nuclei and velocity gradients used here the main simulation results were: a) the inhomogeneous velocity does have a substantial effect on the transformation kinetics and microstructural evolution, b) the inhomogeneous distribution of nuclei has a more significant impact on the microstructure than an inhomogeneous distribution of velocity |
| first_indexed | 2024-12-21T01:19:52Z |
| format | Article |
| id | doaj.art-855f3e763f8c4593baa3f60275de3834 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-21T01:19:52Z |
| publishDate | 2020-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-855f3e763f8c4593baa3f60275de38342022-12-21T19:20:42ZengElsevierJournal of Materials Research and Technology2238-78542020-09-019598689881Transformations with inhomogeneous nucleation and growth velocityMariana Sizenando Lyrio0Gabriella Maria Silveira de Sá1Harison da Silva Ventura2Weslley Luiz da Silva Assis3Elena Villa4Paulo Rangel Rios5Universidade Federal Fluminense, Escola de Engenharia Industrial Metalúrgica de Volta Redonda, Av. dos Trabalhadores, 420, Volta Redonda, RJ, 27255-125, Brazil; Corresponding author.Universidade Federal Fluminense, Escola de Engenharia Industrial Metalúrgica de Volta Redonda, Av. dos Trabalhadores, 420, Volta Redonda, RJ, 27255-125, BrazilUniversidade Federal Fluminense, Escola de Engenharia Industrial Metalúrgica de Volta Redonda, Av. dos Trabalhadores, 420, Volta Redonda, RJ, 27255-125, BrazilUniversidade Federal Fluminense, Escola de Engenharia Industrial Metalúrgica de Volta Redonda, Av. dos Trabalhadores, 420, Volta Redonda, RJ, 27255-125, BrazilUniversity of Milan, Department of Mathematics, via Saldini 50, 20133 Milano, ItalyUniversidade Federal Fluminense, Escola de Engenharia Industrial Metalúrgica de Volta Redonda, Av. dos Trabalhadores, 420, Volta Redonda, RJ, 27255-125, BrazilThe major part of solid-state transformations modeling has concentrated on transformations taking place from a homogeneous matrix. Nonetheless, there are situations in which one finds an inhomogeneous matrix. An example is the recrystallization of metals subjected to an inhomogeneous deformation. If the recrystallization takes place in the regions where the stored energy of cold work is high, one has both a higher number of nuclei and faster growth velocity than in the region where the stored energy is low. In this work, we conduct computer simulations of transformations of a matrix possessing inhomogeneous nucleation and growth. We compare the computer simulations with an analytical solution that considers at the same time both the variation of the number of nuclei and the velocity. These results are compared with results obtained when only inhomogeneous nucleation is considered, whereas the velocity is kept constant throughout the matrix. For the number of nuclei and velocity gradients used here the main simulation results were: a) the inhomogeneous velocity does have a substantial effect on the transformation kinetics and microstructural evolution, b) the inhomogeneous distribution of nuclei has a more significant impact on the microstructure than an inhomogeneous distribution of velocityhttp://www.sciencedirect.com/science/article/pii/S2238785420314654Computer simulationMicrostructurePhase transformationsNucleation and growth transformationsAnalytical methods |
| spellingShingle | Mariana Sizenando Lyrio Gabriella Maria Silveira de Sá Harison da Silva Ventura Weslley Luiz da Silva Assis Elena Villa Paulo Rangel Rios Transformations with inhomogeneous nucleation and growth velocity Journal of Materials Research and Technology Computer simulation Microstructure Phase transformations Nucleation and growth transformations Analytical methods |
| title | Transformations with inhomogeneous nucleation and growth velocity |
| title_full | Transformations with inhomogeneous nucleation and growth velocity |
| title_fullStr | Transformations with inhomogeneous nucleation and growth velocity |
| title_full_unstemmed | Transformations with inhomogeneous nucleation and growth velocity |
| title_short | Transformations with inhomogeneous nucleation and growth velocity |
| title_sort | transformations with inhomogeneous nucleation and growth velocity |
| topic | Computer simulation Microstructure Phase transformations Nucleation and growth transformations Analytical methods |
| url | http://www.sciencedirect.com/science/article/pii/S2238785420314654 |
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