The very high cycle fatigue properties of bearing steel GCr15 prepared by two processing routes
Yongde LI;;shou xin LI;;;;
沈阳中科院金属研究所疲劳部
Cite this article:
Yongde LI; shou xin LI. The very high cycle fatigue properties of bearing steel GCr15 prepared by two processing routes. Acta Metall Sin, 2008, 44(8): 968-972 .
Abstract Abstract: The very high cycle fatigue properties of bearing steel GCr15 prepared by two processing routes are studied in this paper. It is demonstrated that compared with vacuum melting (VM), the specimens prepared by electroslag remelting (ER) have smaller and narrow distribution of the inclusion size. Therefore, the specimens prepared by ER exhibit a better fatigue property. Experimental results and theoretical analysis demonstrate that the stress intensity factor range at the GBF boundary ， ΔKGBF , keeps a constant if the steels are with an identical strength, and it will decrease with the increase of yield strength.
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