Coarsening of β′ precipitates in an isothermally aged Fe 75-Ni10-Al15 alloy

Orlando Soriano-Vargas; Hector J. Dorantes-Rosales; Maribel L. Saucedo-Muñoz; Victor M. Lopez-Hirata; Susana Lezama-Alvarez; Erika O. Avila-Davila

Coarsening of β′ precipitates in an isothermally aged Fe ₇₅-Ni₁₀-Al₁₅ alloy

Orlando Soriano-Vargas, Hector J. Dorantes-Rosales, Maribel L. Saucedo-Muñoz, Victor M. Lopez-Hirata, Susana Lezama-Alvarez, Erika O. Avila-Davila

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The coarsening process of the β′ precipitates was studied in an isothermally aged Fe₇₅-Ni₁₀-Al₁₅ alloy. The aging treatments at 750, 850, and 920°C caused the precipitation of the β′phase with the B2 type crystalline structure in a bcc ferritic matrix phase. As the aging progressed, the initial rounded shape changed to cuboids aligned in the 〈100〉 directions of the ferritic matrix, and finally to rectangular plates also aligned in the same direction. The coarsening process of the β′phase was faster as the aging temperature increased. Nevertheless, the highest hardness and slowest overaging process took place during the aging at 920°C. This increase in hardness seems to be associated with the more rapid formation of the cuboid precipitates aligned in the 〈100〉 direction of the ferritic matrix.

Original language	English
Title of host publication	TMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings
Pages	569-576
Number of pages	8
State	Published - 2011
Externally published	Yes
Event	TMS 2011 - 140th Annual Meeting and Exhibition - San Diego, CA, United States Duration: 27 Feb 2011 → 3 Mar 2011

Publication series

Name	TMS Annual Meeting
Volume	3

Conference

Conference	TMS 2011 - 140th Annual Meeting and Exhibition
Country/Territory	United States
City	San Diego, CA
Period	27/02/11 → 3/03/11

Keywords

Coarsening mechanism
Fe-Ni-Al alloys
β′ phase precipitation

Cite this

@inproceedings{8ef065b5dc454c0aa23dbbb33edabc7c,

title = "Coarsening of β′ precipitates in an isothermally aged Fe 75-Ni10-Al15 alloy",

abstract = "The coarsening process of the β′ precipitates was studied in an isothermally aged Fe75-Ni10-Al15 alloy. The aging treatments at 750, 850, and 920°C caused the precipitation of the β′phase with the B2 type crystalline structure in a bcc ferritic matrix phase. As the aging progressed, the initial rounded shape changed to cuboids aligned in the 〈100〉 directions of the ferritic matrix, and finally to rectangular plates also aligned in the same direction. The coarsening process of the β′phase was faster as the aging temperature increased. Nevertheless, the highest hardness and slowest overaging process took place during the aging at 920°C. This increase in hardness seems to be associated with the more rapid formation of the cuboid precipitates aligned in the 〈100〉 direction of the ferritic matrix.",

keywords = "Coarsening mechanism, Fe-Ni-Al alloys, β′ phase precipitation",

author = "Orlando Soriano-Vargas and Dorantes-Rosales, {Hector J.} and Saucedo-Mu{\~n}oz, {Maribel L.} and Lopez-Hirata, {Victor M.} and Susana Lezama-Alvarez and Avila-Davila, {Erika O.}",

year = "2011",

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

isbn = "9781118029473",

series = "TMS Annual Meeting",

pages = "569--576",

booktitle = "TMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings",

note = "TMS 2011 - 140th Annual Meeting and Exhibition ; Conference date: 27-02-2011 Through 03-03-2011",

}

Soriano-Vargas, O, Dorantes-Rosales, HJ , Saucedo-Muñoz, ML , Lopez-Hirata, VM, Lezama-Alvarez, S & Avila-Davila, EO 2011, Coarsening of β′ precipitates in an isothermally aged Fe ₇₅-Ni₁₀-Al₁₅ alloy. in TMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings. TMS Annual Meeting, vol. 3, pp. 569-576, TMS 2011 - 140th Annual Meeting and Exhibition, San Diego, CA, United States, 27/02/11.

Coarsening of β′ precipitates in an isothermally aged Fe ₇₅-Ni₁₀-Al₁₅ alloy. / Soriano-Vargas, Orlando; Dorantes-Rosales, Hector J.; Saucedo-Muñoz, Maribel L. et al.
TMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings. 2011. p. 569-576 (TMS Annual Meeting; Vol. 3).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Coarsening of β′ precipitates in an isothermally aged Fe 75-Ni10-Al15 alloy

AU - Soriano-Vargas, Orlando

AU - Dorantes-Rosales, Hector J.

AU - Saucedo-Muñoz, Maribel L.

AU - Lopez-Hirata, Victor M.

AU - Lezama-Alvarez, Susana

AU - Avila-Davila, Erika O.

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N2 - The coarsening process of the β′ precipitates was studied in an isothermally aged Fe75-Ni10-Al15 alloy. The aging treatments at 750, 850, and 920°C caused the precipitation of the β′phase with the B2 type crystalline structure in a bcc ferritic matrix phase. As the aging progressed, the initial rounded shape changed to cuboids aligned in the 〈100〉 directions of the ferritic matrix, and finally to rectangular plates also aligned in the same direction. The coarsening process of the β′phase was faster as the aging temperature increased. Nevertheless, the highest hardness and slowest overaging process took place during the aging at 920°C. This increase in hardness seems to be associated with the more rapid formation of the cuboid precipitates aligned in the 〈100〉 direction of the ferritic matrix.

AB - The coarsening process of the β′ precipitates was studied in an isothermally aged Fe75-Ni10-Al15 alloy. The aging treatments at 750, 850, and 920°C caused the precipitation of the β′phase with the B2 type crystalline structure in a bcc ferritic matrix phase. As the aging progressed, the initial rounded shape changed to cuboids aligned in the 〈100〉 directions of the ferritic matrix, and finally to rectangular plates also aligned in the same direction. The coarsening process of the β′phase was faster as the aging temperature increased. Nevertheless, the highest hardness and slowest overaging process took place during the aging at 920°C. This increase in hardness seems to be associated with the more rapid formation of the cuboid precipitates aligned in the 〈100〉 direction of the ferritic matrix.

KW - Coarsening mechanism

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