Acta Metallurgica Sinica (English Letters), Год журнала: 2024, Номер unknown
Опубликована: Дек. 11, 2024
Язык: Английский
Acta Metallurgica Sinica (English Letters), Год журнала: 2024, Номер unknown
Опубликована: Дек. 11, 2024
Язык: Английский
Chemical Engineering Journal, Год журнала: 2024, Номер 496, С. 154157 - 154157
Опубликована: Июль 20, 2024
Язык: Английский
Процитировано
5Ironmaking & Steelmaking Processes Products and Applications, Год журнала: 2025, Номер unknown
Опубликована: Янв. 2, 2025
To explore effective strategies for optimising the grain size of experimental steel, a thermal simulation experiment was utilised within temperature range spanning from 650 °C to 950 °C, at strain rates varying 0.1 10/s, with true 0.918. Through compression, could be reduced 103.4 μm in forged sample minimum 11.6 (0.1 s −1 –950 °C). The double-hyperbolic sine constitutive model developed based on flow stress curves, activation energy plastic deformation determined 514.66 kJmol . critical conditions recrystallisation were identified as [Formula: see text]. Combined microstructural observations, it that refinement primarily occurred through dynamic mechanism and induced ferrite transformation mechanism. Additionally, 850 residual austenite emerged its distribution affected by temperature.
Язык: Английский
Процитировано
0Journal of Materials Engineering and Performance, Год журнала: 2025, Номер unknown
Опубликована: Март 31, 2025
Язык: Английский
Процитировано
0steel research international, Год журнала: 2024, Номер unknown
Опубликована: Окт. 9, 2024
Herein, to improve the microstructure homogeneity of 12Cr10Co3MoWVNbNB steel for turbine blades after forging, hot deformation behavior and evolution are systematically investigated using a hot‐compression experimental setup under conditions 950–1150 °C strain rate 0.001–10 s −1 . A strain‐compensated constitutive equation is established based on flow curves accuracy its prediction verified. By combining processing map with observation, optimal window determined be 1075–1150 1–10 , within which grain size can refined 14.24 μm. Electron backscatter diffraction employed investigate microstructural dynamic recrystallization (DRX) nucleation mechanism deformed samples, revealing that discontinuous DRX characterized by strain‐induced grain‐boundary migration dominant mechanism. Additionally, significantly affect distribution dislocation density local misorientation, as well transition from low‐angle boundaries high‐angle boundaries, ultimately lead differences in fraction microstructure.
Язык: Английский
Процитировано
0Acta Metallurgica Sinica (English Letters), Год журнала: 2024, Номер unknown
Опубликована: Дек. 11, 2024
Язык: Английский
Процитировано
0