Ostwald ripening process of coherent β′ precipitates during aging in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 alloys

N. Cayetano-Castro; M. L. Saucedo-Muñoz; H. J. Dorantes-Rosales; Jorge L. Gonzalez-Velazquez; J. D. Villegas-Cardenas; V. M. Lopez-Hirata

doi:10.1155/2015/485626

Ostwald ripening process of coherent β′ precipitates during aging in Fe_0.75Ni_0.10Al_0.15 and Fe_0.74Ni_0.10Al_0.15Cr_0.01 alloys

N. Cayetano-Castro, M. L. Saucedo-Muñoz, H. J. Dorantes-Rosales, Jorge L. Gonzalez-Velazquez, J. D. Villegas-Cardenas, V. M. Lopez-Hirata

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Abstract

The Ostwald ripening process was studied in Fe_0.75Ni_0.10Al_0.15 and Fe_0.74Ni_0.10Al_0.15Cr_0.01 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 Fe_0.74Ni_0.10Al_0.15Cr_0.01 alloy.

Original language	English
Article number	485626
Journal	Advances in Materials Science and Engineering
Volume	2015
DOIs	https://doi.org/10.1155/2015/485626 https://doi.org/10.1155/2015/485626
State	Published - 2015

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Cayetano-Castro, N., Saucedo-Muñoz, M. L., Dorantes-Rosales, H. J., Gonzalez-Velazquez, J. L., Villegas-Cardenas, J. D., & Lopez-Hirata, V. M. (2015). Ostwald ripening process of coherent β′ precipitates during aging in Fe_0.75Ni_0.10Al_0.15 and Fe_0.74Ni_0.10Al_0.15Cr_0.01 alloys. Advances in Materials Science and Engineering, 2015, Article 485626. https://doi.org/10.1155/2015/485626, https://doi.org/10.1155/2015/485626

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title = "Ostwald ripening process of coherent β′ precipitates during aging in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 alloys",

abstract = "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.",

author = "N. Cayetano-Castro and Saucedo-Mu{\~n}oz, {M. L.} and Dorantes-Rosales, {H. J.} and Gonzalez-Velazquez, {Jorge L.} and Villegas-Cardenas, {J. D.} and Lopez-Hirata, {V. M.}",

note = "Publisher Copyright: Copyright {\textcopyright} 2015 N. Cayetano-Castro et al.",

year = "2015",

doi = "10.1155/2015/485626",

language = "Ingl{\'e}s",

volume = "2015",

journal = "Advances in Materials Science and Engineering",

issn = "1687-8434",

publisher = "Hindawi Publishing Corporation",

}

Cayetano-Castro, N , Saucedo-Muñoz, ML , Dorantes-Rosales, HJ , Gonzalez-Velazquez, JL, Villegas-Cardenas, JD & Lopez-Hirata, VM 2015, 'Ostwald ripening process of coherent β′ precipitates during aging in Fe_0.75Ni_0.10Al_0.15 and Fe_0.74Ni_0.10Al_0.15Cr_0.01 alloys', Advances in Materials Science and Engineering, vol. 2015, 485626. https://doi.org/10.1155/2015/485626, https://doi.org/10.1155/2015/485626

TY - JOUR

T1 - Ostwald ripening process of coherent β′ precipitates during aging in Fe0.75Ni0.10Al0.15 and Fe0.74Ni0.10Al0.15Cr0.01 alloys

AU - Cayetano-Castro, N.

AU - Saucedo-Muñoz, M. L.

AU - Dorantes-Rosales, H. J.

AU - Gonzalez-Velazquez, Jorge L.

AU - Villegas-Cardenas, J. D.

AU - Lopez-Hirata, V. M.

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84932650709&partnerID=8YFLogxK

U2 - 10.1155/2015/485626

DO - 10.1155/2015/485626

M3 - Artículo

SN - 1687-8434

VL - 2015

JO - Advances in Materials Science and Engineering

JF - Advances in Materials Science and Engineering

M1 - 485626

ER -

Ostwald ripening process of coherent β′ precipitates during aging in Fe_0.75Ni_0.10Al_0.15 and Fe_0.74Ni_0.10Al_0.15Cr_0.01 alloys

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