Randomized trial assesses dynamic recrystallization in EP741NP superalloy, suggesting optimal processing conditions for better performance.
Key Points
To investigate how dynamic recrystallization behavior of EP741NP superalloy varies with deformation temperature, strain rate, and strain during hot deformation.
Compression deformation experiments conducted at various temperatures, strain rates, and strains.
Key parameters assessed: T = 1140 ℃, ε̇ = 0.001 s -1, and ε = 0.7.
Characterization of microstructural evolution through evaluation of dynamic recrystallization.
Dynamic recrystallization degree increases with temperature and strain but decreases with strain rate.
Discontinuous and continuous dynamic recrystallization both contribute to deformation behavior.
Discontinuous dynamic recrystallization becomes dominant at higher temperatures and increased strain while reducing strain rate.