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

• 作者: Arindam Ghosh Karthikeyan Rajan Vinod Joshi
• 来源期刊: 表面工程材料与先进技术期刊(英文)
• 学科: 工学
• 关键词: CARBONITRIDING RETAINED AUSTENITE MARTENSITE ENDURANCE Test Bearing Steel
• 年，卷（期）: bmgcclyxjjsqkyw_2013,（3）
• 页码范围: 172-177
• 页数: 6页
• 分类号: TG14

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.