Effect of powder preparation technology on the hot deformation behavior of HIPed P/M nickel-base superalloy FGH96

► HIPed P/M nickel-base superalloy FGH96 prepared by plasma rotation electric pole (PREP) powder exhibits high flow stress at lower temperatures (<1050 °C). ► The effect of preparation technology on hot deformation behavior is slight at higher temperatures (>1050 °C) or lower strain rates (<0.01 s−1). ► The activation energy decreases with the increase of strain. ► The activation energy of the alloy prepared by PREP powder is higher than that prepared by argon atomization (AA) powder. ► The heat treatment time has a significant influence on recrystallized grain size for the alloy prepared by AA powder.