Ostwald Ripening Process of Coherent β′ Precipitates during Aging in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 Alloys
The Ostwald ripening process was studied in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 alloys after aging at 750, 850, and 950°C for different times. The microstructural evolution shows a rounded cube morphology (Fe, Ni)Al β′ precipitates aligned in the ferrite matrix, which changes to elongate...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/485626 |
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| author | N. Cayetano-Castro M. L. Saucedo-Muñoz H. J. Dorantes-Rosales Jorge L. Gonzalez-Velazquez J. D. Villegas-Cardenas V. M. Lopez-Hirata |
| author_facet | N. Cayetano-Castro M. L. Saucedo-Muñoz H. J. Dorantes-Rosales Jorge L. Gonzalez-Velazquez J. D. Villegas-Cardenas V. M. Lopez-Hirata |
| author_sort | N. Cayetano-Castro |
| collection | DOAJ |
| description | The Ostwald ripening process was studied in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 alloys after aging at 750, 850, and 950°C for different times. The microstructural evolution shows a rounded cube morphology (Fe, Ni)Al β′ precipitates aligned in the ferrite matrix, which changes to elongated plates after prolonged aging. The variation of the equivalent radii of precipitates with time follows the modified Lifshitz-Slyozov-Wagner theory for diffusion-controlled coarsening. Thermo-Calc analysis shows that the chromium content is richer in the matrix than in the precipitates which causes higher hardness and coarsening resistance in the aged Fe0.74Ni0.10Al0.15Cr0.01 alloy. |
| format | Article |
| id | doaj-art-ed78194ce8bd4265996d16a2ce3180f7 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-ed78194ce8bd4265996d16a2ce3180f72025-02-03T01:30:57ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/485626485626Ostwald Ripening Process of Coherent β′ Precipitates during Aging in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 AlloysN. Cayetano-Castro0M. L. Saucedo-Muñoz1H. J. Dorantes-Rosales2Jorge L. Gonzalez-Velazquez3J. D. Villegas-Cardenas4V. M. Lopez-Hirata5Instituto Politécnico Nacional (ESIQIE-CNMN), Apartado Postal 118-556, 07051 Mexico, DF, MexicoInstituto Politécnico Nacional (ESIQIE-CNMN), Apartado Postal 118-556, 07051 Mexico, DF, MexicoInstituto Politécnico Nacional (ESIQIE-CNMN), Apartado Postal 118-556, 07051 Mexico, DF, MexicoInstituto Politécnico Nacional (ESIQIE-CNMN), Apartado Postal 118-556, 07051 Mexico, DF, MexicoInstituto Politécnico Nacional (ESIQIE-CNMN), Apartado Postal 118-556, 07051 Mexico, DF, MexicoInstituto Politécnico Nacional (ESIQIE-CNMN), Apartado Postal 118-556, 07051 Mexico, DF, MexicoThe Ostwald ripening process was studied in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 alloys after aging at 750, 850, and 950°C for different times. The microstructural evolution shows a rounded cube morphology (Fe, Ni)Al β′ precipitates aligned in the ferrite matrix, which changes to elongated plates after prolonged aging. The variation of the equivalent radii of precipitates with time follows the modified Lifshitz-Slyozov-Wagner theory for diffusion-controlled coarsening. Thermo-Calc analysis shows that the chromium content is richer in the matrix than in the precipitates which causes higher hardness and coarsening resistance in the aged Fe0.74Ni0.10Al0.15Cr0.01 alloy.http://dx.doi.org/10.1155/2015/485626 |
| spellingShingle | N. Cayetano-Castro M. L. Saucedo-Muñoz H. J. Dorantes-Rosales Jorge L. Gonzalez-Velazquez J. D. Villegas-Cardenas V. M. Lopez-Hirata Ostwald Ripening Process of Coherent β′ Precipitates during Aging in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 Alloys Advances in Materials Science and Engineering |
| title | Ostwald Ripening Process of Coherent β′ Precipitates during Aging in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 Alloys |
| title_full | Ostwald Ripening Process of Coherent β′ Precipitates during Aging in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 Alloys |
| title_fullStr | Ostwald Ripening Process of Coherent β′ Precipitates during Aging in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 Alloys |
| title_full_unstemmed | Ostwald Ripening Process of Coherent β′ Precipitates during Aging in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 Alloys |
| title_short | Ostwald Ripening Process of Coherent β′ Precipitates during Aging in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 Alloys |
| title_sort | ostwald ripening process of coherent β precipitates during aging in fe0 75ni0 10al0 15 and fe0 74ni0 10al0 15cr0 01 alloys |
| url | http://dx.doi.org/10.1155/2015/485626 |
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