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- W3182767533 abstract "AbstractNickel-based superalloys have been widely used to produce high-performance components in advanced engines. In present research, isothermal compression tests of GH4065A nickel-based superalloy were conducted at deformation temperatures of 1020–1140 °C and strain rates of 0.001–1.0 s−1. The deformation temperature and strain rate have a significant effect on the flow curves, from which the intrinsic connection between the flow stress and deformation behavior can be systematically investigated. The deformation activation energy of the studied alloy was calculated to be 521.65 kJ·mol−1 at the strain of 0.5 when the flow stress was steady. Meanwhile, the constitutive equation was constructed for modeling the hot plastic deformation, and the prediction accuracy of flow stress was well verified. Based on the combination of processing map and microstructural observation, two instability domains were delineated as follows: Domain #1: 1020–1065 °C/0.25–1.0 s−1; Domain #2: 1130–1140 °C/0.001–0.002 s−1. In addition, the instability mechanism of these two domains was deeply discussed. The results obtained in this research would provide effective theoretical guidance for manufacturing high-performance components in advanced engines.KeywordsHot plastic deformationFlow behaviorProcessing map" @default.
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- W3182767533 date "2021-01-01" @default.
- W3182767533 modified "2023-10-17" @default.
- W3182767533 title "Flow Behavior and Processing Map of a Nickel-Based Superalloy During Hot Plastic Deformation Process" @default.
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- W3182767533 doi "https://doi.org/10.1007/978-3-030-75381-8_74" @default.
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