발간논문

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Vol.31, No.4, 526 ~ 536, 1993
Title
Effects of Non - metallic Inclusions on the Fatigue Life in bearing Steels
남원종Won Jong Nam, 최해창Hae Chang Choi
Abstract
The effect of the distribution of non-metallic inclusions on fatigue life in bearing steels was investigated. Most oxide inclusions observed in this work were globular oxides. The increase in the oxygen content has an effect of increasing the amount of oxides inclusions and decreasing fatigue life. But the direct relationship between the distribution of oxide inclusions and fatigue life could not be formulated. The increase in sulfur content results in the decrease in fatigue life. The phenomenon that the exis tence of MnS does not hinder the crack propagation during rolling contanct fatigue test was observed. And also the occurence of cracks and cavities at the MnS inclusion was observed.
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