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| 汽车发动机曲轴断裂失效分析 |
| Failure Analysis for Fracture of Crankshaft of Automobile Engine |
| Received:July 13, 2010 Revised:September 10, 2010 |
| DOI： |
| 中文关键词: 曲轴 断裂 失效分析 断口分析 显微组织检验 低倍组织检验 能谱分析 |
| 英文关键词: crankshaft fracture failure analysis fracture inspection microstructure examination macrostructure examination energy spectrum analysis |
| 基金项目: |
| Author Name | Affiliation | | ZHU Lei | No.59 Research Institute of China Ordnance Industry, The Natural Environmental Test and Research Center of Science, Technology and Industry for National Defense, Chongqing 400039, China | | GONG Jie | No.59 Research Institute of China Ordnance Industry, The Natural Environmental Test and Research Center of Science, Technology and Industry for National Defense, Chongqing 400039, China | | MEI Hua-sheng | No.59 Research Institute of China Ordnance Industry, The Natural Environmental Test and Research Center of Science, Technology and Industry for National Defense, Chongqing 400039, China |
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| 中文摘要: |
| 采用断口分析、显微组织检验、低倍组织检验、能谱分析和化学成份分析等方法对某汽车发动机曲轴断裂进行了失效分析，判断断裂失效的主要原因是非金属夹杂和次表面的原始微裂纹，建议改进热处理工艺，保证组织的均匀性，选用非金属夹杂物含量小的钢材。 |
| 英文摘要: |
| The failure analysis for fracture on crankshaft of automobile engine was carried out by inspection of fracture, examination of microstructure and macrostructure, energy spectrum analysis and chemistry component analysis. The main causation of fracture was that there were some nonmetallic inclusions in the source of crack and some microcracks on the sublayer. It is suggested that the technique of heat treatment should be improved to make the microstructure of crankshaft uniform, and the steel with less content of nonmetallic inclusions should be selected. |
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