| 20CrMnTi钢花键轴开裂失效分析 |
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| 引用本文： | 李俊,赵鑫,王温银.20CrMnTi钢花键轴开裂失效分析[J].热处理,2011(5):82-84. |
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| 作者姓名： | 李俊 赵鑫 王温银 |
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| 作者单位： | 中国矿业大学材料科学与工程学院; |
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| 摘 要： | 经渗碳、淬火和回火处理的20CrMnTi钢花键轴在使用中其轴肩的根部开裂。对开裂的花键轴进行了宏观、微观分析和硬度测试。结果表明,花键轴的显微组织没有达到要求,导致韧性降低;轴肩根部不是圆角而是直角,造成应力集中,最终导致花键轴开裂失效。
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| 关 键 词： | 20CrMnTi钢 花键轴 开裂 组织 |
Analysis on Cracking of 20CrMnTi Steel Spline Shaft |
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| LI Jun,ZHAO Xin,WANG Wen-yin School of Materials Science , Engineering,China University of Mining , Technology,Xuzhou ,Jiangsu China.Analysis on Cracking of 20CrMnTi Steel Spline Shaft[J].Heat Treatment,2011(5):82-84. |
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| Authors: | LI Jun ZHAO Xin WANG Wen-yin School of Materials Science Engineering China University of Mining Technology Xuzhou Jiangsu China |
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| Affiliation: | LI Jun,ZHAO Xin,WANG Wen-yin School of Materials Science and Engineering,China University of Mining and Technology,Xuzhou 221116,Jiangsu China |
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| Abstract: | Shoulder root of 20CrMnTi steel spline shaft subjected to carburizing,hardening and tempering cracked in service.The cracked spline shaft was macro-and micro-examined,and hardness tested.The results show that microstructure of spline shaft do not conform with the requirement,resulting in lower toughness,moreover,the shoulder root is not filleted corner but right angle causing stress concentration,leading to the spline shaft cracking. Key wodrs: 20CrMnTi steel;spline shaft;cracking;microstructure |
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| Keywords: | 20CrMnTi steel spline shaft cracking microstructure |
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