N. Kawagoishi et al., Influence of cubic boron nitride grinding on the fatigue strengths of carbon steels and a nickel-base superalloy, J MAT ENG P, 8(2), 1999, pp. 152-158
The influence of cubic boron nitride (CBN) grinding on fatigue strength was
investigated on an annealed carbon steel, a quenched and tempered carbon s
teel at room temperature, and a nickel-base superalloy, Inconel 718, at roo
m temperature and 500 degrees C, The results were discussed from several, v
iewpoints! including surface roughness, residual stress, and work hardening
or softening due to CBN grinding. The fatigue strength increased upon CBN
grinding at room temperature. primarily because of the generation of compre
ssive residual stress in the surface region. Hen-ever, in the case of Incon
el 718, this marked increase in the fatigue strength tended to disappear at
the elevated temperature due to the release of compressive residual stress
and the decrease of crack growth resistance at an elevated temperature.