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

作　　者：Karthikeyan Rajan Vinod Joshi Arindam Ghosh 

机构地区：[1]Research & Development, National Engineering Industries Ltd., Jaipur, India.

出　　处：《Journal of Surface Engineered Materials and Advanced Technology》2013年第3期172-177,共6页表面工程材料与先进技术期刊（英文）

摘　　要：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.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.

关 键 词：CARBONITRIDING RETAINED AUSTENITE MARTENSITE ENDURANCE Test BEARING Steel 

分 类 号：TG14[一般工业技术—材料科学与工程]