Deformation characteristics of as-received Haynes230 nickel base superalloy

Yi Liu; Rui Hu; Jinshan Li; Hongchao Kou; Hongwei Li; Hui Chang; Hengzhi Fu

doi:10.1016/j.msea.2008.07.052

Deformation characteristics of as-received Haynes230 nickel base superalloy

Yi Liu, Rui Hu, Jinshan Li, Hongchao Kou, Hongwei Li, Hui Chang, Hengzhi Fu

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

83 Scopus citations

Abstract

The hot deformation behavior of nickel base superalloy Haynes230 has been studied using hot compression experiments. Specimens were deformed in the temperature range of 1050-1250 °C with strain rates of 10^-3 to 10 s^-1 and total strain of above 0.7. True stress-true strain curves and deformation microstructures were studied. The results show that dynamic recrystallization is the mainly softening mechanism during the high temperature deformation of Haynes230, and it can be effectively promoted by increasing deformation temperature. When deformation temperature is higher than 1150 °C, completely recrystallized microstructures can be obtained. Dependence of peak stress on the temperature and strain rate is modeled using the hyperbolic-sine Arrhenius-type equation. The average activation energy is determined to be 404 kJ/mol.

Original language	English
Pages (from-to)	283-289
Number of pages	7
Journal	Materials Science and Engineering: A
Volume	497
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2008.07.052
State	Published - 15 Dec 2008
Externally published	Yes

Keywords

Dynamic recrystallization
Haynes230
Hot deformation

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10.1016/j.msea.2008.07.052

Cite this

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title = "Deformation characteristics of as-received Haynes230 nickel base superalloy",

abstract = "The hot deformation behavior of nickel base superalloy Haynes230 has been studied using hot compression experiments. Specimens were deformed in the temperature range of 1050-1250 °C with strain rates of 10-3 to 10 s-1 and total strain of above 0.7. True stress-true strain curves and deformation microstructures were studied. The results show that dynamic recrystallization is the mainly softening mechanism during the high temperature deformation of Haynes230, and it can be effectively promoted by increasing deformation temperature. When deformation temperature is higher than 1150 °C, completely recrystallized microstructures can be obtained. Dependence of peak stress on the temperature and strain rate is modeled using the hyperbolic-sine Arrhenius-type equation. The average activation energy is determined to be 404 kJ/mol.",

keywords = "Dynamic recrystallization, Haynes230, Hot deformation",

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doi = "10.1016/j.msea.2008.07.052",

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T1 - Deformation characteristics of as-received Haynes230 nickel base superalloy

AU - Liu, Yi

AU - Hu, Rui

AU - Li, Jinshan

AU - Kou, Hongchao

AU - Li, Hongwei

AU - Chang, Hui

AU - Fu, Hengzhi

PY - 2008/12/15

Y1 - 2008/12/15

N2 - The hot deformation behavior of nickel base superalloy Haynes230 has been studied using hot compression experiments. Specimens were deformed in the temperature range of 1050-1250 °C with strain rates of 10-3 to 10 s-1 and total strain of above 0.7. True stress-true strain curves and deformation microstructures were studied. The results show that dynamic recrystallization is the mainly softening mechanism during the high temperature deformation of Haynes230, and it can be effectively promoted by increasing deformation temperature. When deformation temperature is higher than 1150 °C, completely recrystallized microstructures can be obtained. Dependence of peak stress on the temperature and strain rate is modeled using the hyperbolic-sine Arrhenius-type equation. The average activation energy is determined to be 404 kJ/mol.

AB - The hot deformation behavior of nickel base superalloy Haynes230 has been studied using hot compression experiments. Specimens were deformed in the temperature range of 1050-1250 °C with strain rates of 10-3 to 10 s-1 and total strain of above 0.7. True stress-true strain curves and deformation microstructures were studied. The results show that dynamic recrystallization is the mainly softening mechanism during the high temperature deformation of Haynes230, and it can be effectively promoted by increasing deformation temperature. When deformation temperature is higher than 1150 °C, completely recrystallized microstructures can be obtained. Dependence of peak stress on the temperature and strain rate is modeled using the hyperbolic-sine Arrhenius-type equation. The average activation energy is determined to be 404 kJ/mol.

KW - Dynamic recrystallization

KW - Haynes230

KW - Hot deformation

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U2 - 10.1016/j.msea.2008.07.052

DO - 10.1016/j.msea.2008.07.052

M3 - 文章

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SN - 0921-5093

VL - 497

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EP - 289

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

Deformation characteristics of as-received Haynes230 nickel base superalloy

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Keywords

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