Effect of Carbonitriding on Endurance Life of Ball Bearing Produced from SAE 52100 Bearing Steels


The present paper reports the unusual enhancement of endurance life of ball bearings subjected to carbonitriding treatment. The microstructure was characterized by scanning electron microscopy and correlated with hardness and X-ray diffraction analysis. Endurance tests at 90% reliability revealed that the carbonitrided bearings exhibit nearly ten times more life than the non-carbonitrided bearings. This is attributed to synergic combination of retained austenitic, fine martensitic microstructure and ultrafine carbide precipitates obtained by carbonitriding treatment.

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Rajan, K. , Joshi, V. and Ghosh, A. (2013) Effect of Carbonitriding on Endurance Life of Ball Bearing Produced from SAE 52100 Bearing Steels. Journal of Surface Engineered Materials and Advanced Technology, 3, 172-177. doi: 10.4236/jsemat.2013.33023.

Conflicts of Interest

The authors declare no conflicts of interest.


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