The effects of temperature and stress on the high-cycle fatigue properties of a Ni-based wrought superalloy

•The fatigue strength at 107 cycles of GH4742 alloy increases with increasing of temperatures.•The high cycle fatigue fracture mode is surface defect fracture at room temperature.•At 650 °C and 750 °C, the high cycle fatigue fracture mode is the subsurface, and the surface defects and internal or surface crystallographic planes.•The deformation mechanism is mainly governed by APBs shearing and Orowan bypassing.