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Hot Deformation Behavior via Isothermal Compression and Constitutive Model of GH2132 Superalloy.

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Title: Hot Deformation Behavior via Isothermal Compression and Constitutive Model of GH2132 Superalloy.
Authors: Sun, Yue1,2 (AUTHOR), Cheng, Peng1,2 (AUTHOR) pengcheng080@163.com, Wang, Decheng1,2 (AUTHOR), Shao, Chenxi1 (AUTHOR), Cheng, Lu1 (AUTHOR)
Source: Materials (1996-1944). Dec2025, Vol. 18 Issue 24, p5650. 17p.
Subjects: Isothermal compression, Hot working, Recrystallization (Metallurgy), Arrhenius equation, Mechanical behavior of materials, Heat resistant alloys
Abstract: GH2132, an Ni–Cr–Fe-based superalloy for aero-engine components, exhibits hot workability that is highly sensitive to processing parameters. The hot deformation behavior of GH2132 alloy was investigated via isothermal compression (Gleeble-3500-GTC) over 850–1100 °C and 0.001–10 s−1, combined with optical microscopy and EBSD characterization. A strain-compensated Arrhenius-type hyperbolic-sine model was established, achieving high predictive accuracy (R2 = 0.9916; AARE = 3.86%) with an average activation energy Q = 446.2 kJ·mol−1. Flow stress decreases with increasing temperature and increases with strain rate, while microstructural softening transitions from dynamic recovery to complete dynamic recrystallization at higher temperatures and lower strain rates. Three-dimensional power-dissipation and hot-processing maps (Dynamic Materials Model) delineate safe domains and instability regions, identifying an optimal window of 1000–1100 °C at 0.001–0.01 s−1 and instability at 850–900 °C with 0.01–0.1 s−1. These results provide guidance for selecting parameters for hot deformation behavior during thermomechanical processing of GH2132. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 190471583
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  Data: Hot Deformation Behavior via Isothermal Compression and Constitutive Model of GH2132 Superalloy.
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  Data: <searchLink fieldCode="AR" term="%22Sun%2C+Yue%22">Sun, Yue</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cheng%2C+Peng%22">Cheng, Peng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> pengcheng080@163.com</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Decheng%22">Wang, Decheng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shao%2C+Chenxi%22">Shao, Chenxi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cheng%2C+Lu%22">Cheng, Lu</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Dec2025, Vol. 18 Issue 24, p5650. 17p.
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  Data: <searchLink fieldCode="DE" term="%22Isothermal+compression%22">Isothermal compression</searchLink><br /><searchLink fieldCode="DE" term="%22Hot+working%22">Hot working</searchLink><br /><searchLink fieldCode="DE" term="%22Recrystallization+%28Metallurgy%29%22">Recrystallization (Metallurgy)</searchLink><br /><searchLink fieldCode="DE" term="%22Arrhenius+equation%22">Arrhenius equation</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+resistant+alloys%22">Heat resistant alloys</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: GH2132, an Ni–Cr–Fe-based superalloy for aero-engine components, exhibits hot workability that is highly sensitive to processing parameters. The hot deformation behavior of GH2132 alloy was investigated via isothermal compression (Gleeble-3500-GTC) over 850–1100 °C and 0.001–10 s−1, combined with optical microscopy and EBSD characterization. A strain-compensated Arrhenius-type hyperbolic-sine model was established, achieving high predictive accuracy (R2 = 0.9916; AARE = 3.86%) with an average activation energy Q = 446.2 kJ·mol−1. Flow stress decreases with increasing temperature and increases with strain rate, while microstructural softening transitions from dynamic recovery to complete dynamic recrystallization at higher temperatures and lower strain rates. Three-dimensional power-dissipation and hot-processing maps (Dynamic Materials Model) delineate safe domains and instability regions, identifying an optimal window of 1000–1100 °C at 0.001–0.01 s−1 and instability at 850–900 °C with 0.01–0.1 s−1. These results provide guidance for selecting parameters for hot deformation behavior during thermomechanical processing of GH2132. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/ma18245650
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      – Code: eng
        Text: English
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        PageCount: 17
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        Type: general
      – SubjectFull: Hot working
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      – SubjectFull: Recrystallization (Metallurgy)
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      – SubjectFull: Arrhenius equation
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      – SubjectFull: Mechanical behavior of materials
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      – SubjectFull: Heat resistant alloys
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      – TitleFull: Hot Deformation Behavior via Isothermal Compression and Constitutive Model of GH2132 Superalloy.
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            NameFull: Sun, Yue
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            NameFull: Wang, Decheng
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              M: 12
              Text: Dec2025
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              Y: 2025
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