摘要
5 heats of GCr15 bearing steel of different sulfur contents ranging from 0.009-0.092% （wt.）were smelted. The role of sulfur in bearing steel and its effect on contact fatigue properties andfracture toughness K<sub>IC</sub>Were studied. It was shown that as the sulfur content increases the sulfur content dissolved in the steelsubstrate remains unchanged. The best contact fatigue property appears at the sulfur content of0.045% （wt.）, and the influence of sulfur content on the fracture toughness of bearing steel is notobvious. Finally, the mechanism of the role of sulfur was investigated.
5 heats of GCr15 bearing steel of different sulfur contents ranging from 0.009-0.092% (wt.) were smelted. The role of sulfur in bearing steel and its effect on contact fatigue properties and fracture toughness K_(IC)Were studied. It was shown that as the sulfur content increases the sulfur content dissolved in the steel substrate remains unchanged. The best contact fatigue property appears at the sulfur content of 0.045% (wt.), and the influence of sulfur content on the fracture toughness of bearing steel is not obvious. Finally, the mechanism of the role of sulfur was investigated.
