Abstract
Ultrasonic assisted grinding (UAG) experiments were carried out to evaluate the effects of the ultrasonic vibration on the conventional creep feed grinding of the nickel based alloy of Rene77. In experiments, an electroforming grinding wheel with cubic boron nitride (CBN) grains was ultrasonically vibrated along its axial direction. The results indicated that the normal and tangential grinding forces were reduced significantly and the surface roughness (Ra) of the ground slots was decreased when the ultrasonic vibration was utilized in the grinding process. The SEM micrographs revealed that the scale-shape grinding traces and the fracture disappeared with UAG
