Research on the dynamic recrystallization kinetics of Aermet100 steel

Guoliang Ji; Fuguo Li; Qinghua Li; Huiqu Li; Zhi Li

doi:10.1016/j.msea.2009.12.001

Research on the dynamic recrystallization kinetics of Aermet100 steel

Guoliang Ji, Fuguo Li, Qinghua Li, Huiqu Li, Zhi Li

School of Materials Sience and Engineering

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

113 Scopus citations

Abstract

Using the compression tests on a Gleeble-3800 thermo-mechanical simulator, the hot deformation behavior of ultrahigh strength Aermet100 steel was studied in the temperature ranges of 800-1200 °C and the strain rate ranges of 0.01-50 s^-1. Dependence of the peak stress on temperature and strain rate for Aermet100 steel is described by means of the conventional hyperbolic sine equation; By regression analysis, the activation energy in the whole range of deformation temperature was determined to be Q = 489.10 kJ/mol. The dynamic recrystallization (DRX) kinetics of Aermet100 steel is established by further analysis of true stress-true strain curves. The complete DRX grain size is dependent only on Zener-Hollomon parameter (Z) and is independent of the initial grain size and accumulated strain, because Z controls the stored energy. The complete DRX grain size is a power law function of Z with an exponent of -0.24.

Original language	English
Pages (from-to)	2350-2355
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	527
Issue number	9
DOIs	https://doi.org/10.1016/j.msea.2009.12.001
State	Published - 15 Apr 2010

Keywords

Activation energy
Aermet100 steel
Dynamic recrystallization
Hot deformation

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10.1016/j.msea.2009.12.001

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title = "Research on the dynamic recrystallization kinetics of Aermet100 steel",

abstract = "Using the compression tests on a Gleeble-3800 thermo-mechanical simulator, the hot deformation behavior of ultrahigh strength Aermet100 steel was studied in the temperature ranges of 800-1200 °C and the strain rate ranges of 0.01-50 s-1. Dependence of the peak stress on temperature and strain rate for Aermet100 steel is described by means of the conventional hyperbolic sine equation; By regression analysis, the activation energy in the whole range of deformation temperature was determined to be Q = 489.10 kJ/mol. The dynamic recrystallization (DRX) kinetics of Aermet100 steel is established by further analysis of true stress-true strain curves. The complete DRX grain size is dependent only on Zener-Hollomon parameter (Z) and is independent of the initial grain size and accumulated strain, because Z controls the stored energy. The complete DRX grain size is a power law function of Z with an exponent of -0.24.",

keywords = "Activation energy, Aermet100 steel, Dynamic recrystallization, Hot deformation",

author = "Guoliang Ji and Fuguo Li and Qinghua Li and Huiqu Li and Zhi Li",

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T1 - Research on the dynamic recrystallization kinetics of Aermet100 steel

AU - Ji, Guoliang

AU - Li, Fuguo

AU - Li, Qinghua

AU - Li, Huiqu

AU - Li, Zhi

PY - 2010/4/15

Y1 - 2010/4/15

N2 - Using the compression tests on a Gleeble-3800 thermo-mechanical simulator, the hot deformation behavior of ultrahigh strength Aermet100 steel was studied in the temperature ranges of 800-1200 °C and the strain rate ranges of 0.01-50 s-1. Dependence of the peak stress on temperature and strain rate for Aermet100 steel is described by means of the conventional hyperbolic sine equation; By regression analysis, the activation energy in the whole range of deformation temperature was determined to be Q = 489.10 kJ/mol. The dynamic recrystallization (DRX) kinetics of Aermet100 steel is established by further analysis of true stress-true strain curves. The complete DRX grain size is dependent only on Zener-Hollomon parameter (Z) and is independent of the initial grain size and accumulated strain, because Z controls the stored energy. The complete DRX grain size is a power law function of Z with an exponent of -0.24.

AB - Using the compression tests on a Gleeble-3800 thermo-mechanical simulator, the hot deformation behavior of ultrahigh strength Aermet100 steel was studied in the temperature ranges of 800-1200 °C and the strain rate ranges of 0.01-50 s-1. Dependence of the peak stress on temperature and strain rate for Aermet100 steel is described by means of the conventional hyperbolic sine equation; By regression analysis, the activation energy in the whole range of deformation temperature was determined to be Q = 489.10 kJ/mol. The dynamic recrystallization (DRX) kinetics of Aermet100 steel is established by further analysis of true stress-true strain curves. The complete DRX grain size is dependent only on Zener-Hollomon parameter (Z) and is independent of the initial grain size and accumulated strain, because Z controls the stored energy. The complete DRX grain size is a power law function of Z with an exponent of -0.24.

KW - Activation energy

KW - Aermet100 steel

KW - Dynamic recrystallization

KW - Hot deformation

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U2 - 10.1016/j.msea.2009.12.001

DO - 10.1016/j.msea.2009.12.001

M3 - 文章

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SN - 0921-5093

VL - 527

SP - 2350

EP - 2355

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 9

ER -

Research on the dynamic recrystallization kinetics of Aermet100 steel

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Keywords

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