Recrystallization of the hot isostatic pressed nickel-base superalloy FGH4096. II: Characterization and application

Yongquan Ning; Mingwang Fu; Wei Yao

doi:10.1016/j.msea.2012.01.065

Recrystallization of the hot isostatic pressed nickel-base superalloy FGH4096. II: Characterization and application

Yongquan Ning, Mingwang Fu, Wei Yao

Research output: Journal article publication › Journal article › Academic research › peer-review

37 Citations (Scopus)

Abstract

Recrystallization of the hot isostatic pressed nickel-base superalloy FGH4096 undergoes three characteristic periods, viz., incubation, nucleation and growth. Working temperature has a great effect on its boundary migration and nucleation. In recrystallization process, the nucleation rate is obviously accelerated with the increasing working temperature. To obtain fine grains, hot working should be carried out at the temperature of 1050-1080. °C. After two passes multiple forging, the grain size is significantly refined from 30.0 to 2.2. μm, and the refinement mechanism is found to be the repeated dynamic recrystallization (DRX) in the multiple forging process. Equiaxed-flatted gradient microstructure is obtained via the gradient temperature heat treatment (GTHT).

Original language	English
Pages (from-to)	101-106
Number of pages	6
Journal	Materials Science and Engineering A
Volume	539
DOIs	https://doi.org/10.1016/j.msea.2012.01.065
Publication status	Published - 30 Mar 2012

Keywords

Gradient temperature heat treatment
Microstructure characterization
Nickel-base superalloy
Recrystallization

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2012.01.065

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title = "Recrystallization of the hot isostatic pressed nickel-base superalloy FGH4096. II: Characterization and application",

abstract = "Recrystallization of the hot isostatic pressed nickel-base superalloy FGH4096 undergoes three characteristic periods, viz., incubation, nucleation and growth. Working temperature has a great effect on its boundary migration and nucleation. In recrystallization process, the nucleation rate is obviously accelerated with the increasing working temperature. To obtain fine grains, hot working should be carried out at the temperature of 1050-1080. °C. After two passes multiple forging, the grain size is significantly refined from 30.0 to 2.2. μm, and the refinement mechanism is found to be the repeated dynamic recrystallization (DRX) in the multiple forging process. Equiaxed-flatted gradient microstructure is obtained via the gradient temperature heat treatment (GTHT).",

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doi = "10.1016/j.msea.2012.01.065",

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T1 - Recrystallization of the hot isostatic pressed nickel-base superalloy FGH4096. II: Characterization and application

AU - Ning, Yongquan

AU - Fu, Mingwang

AU - Yao, Wei

PY - 2012/3/30

Y1 - 2012/3/30

N2 - Recrystallization of the hot isostatic pressed nickel-base superalloy FGH4096 undergoes three characteristic periods, viz., incubation, nucleation and growth. Working temperature has a great effect on its boundary migration and nucleation. In recrystallization process, the nucleation rate is obviously accelerated with the increasing working temperature. To obtain fine grains, hot working should be carried out at the temperature of 1050-1080. °C. After two passes multiple forging, the grain size is significantly refined from 30.0 to 2.2. μm, and the refinement mechanism is found to be the repeated dynamic recrystallization (DRX) in the multiple forging process. Equiaxed-flatted gradient microstructure is obtained via the gradient temperature heat treatment (GTHT).

AB - Recrystallization of the hot isostatic pressed nickel-base superalloy FGH4096 undergoes three characteristic periods, viz., incubation, nucleation and growth. Working temperature has a great effect on its boundary migration and nucleation. In recrystallization process, the nucleation rate is obviously accelerated with the increasing working temperature. To obtain fine grains, hot working should be carried out at the temperature of 1050-1080. °C. After two passes multiple forging, the grain size is significantly refined from 30.0 to 2.2. μm, and the refinement mechanism is found to be the repeated dynamic recrystallization (DRX) in the multiple forging process. Equiaxed-flatted gradient microstructure is obtained via the gradient temperature heat treatment (GTHT).

KW - Gradient temperature heat treatment

KW - Microstructure characterization

KW - Nickel-base superalloy

KW - Recrystallization

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DO - 10.1016/j.msea.2012.01.065

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JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

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Recrystallization of the hot isostatic pressed nickel-base superalloy FGH4096. II: Characterization and application

Abstract

Keywords

ASJC Scopus subject areas

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