| 汽车发动机曲轴断裂失效分析 |
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| 引用本文： | 朱蕾,宫杰,梅华生. 汽车发动机曲轴断裂失效分析[J]. 金属成形工艺, 2010, 0(5): 71-74 |
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| 作者姓名： | 朱蕾 宫杰 梅华生 |
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| 作者单位： | 中国兵器工业第五九研究所国防科技工业自然环境试验研究中心,重庆400039 |
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| 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。
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| 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 |
Failure Analysis for Fracture of Crankshaft of Automobile Engine |
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| ZHU Lei,GONG Jie,MEI Hua-sheng. Failure Analysis for Fracture of Crankshaft of Automobile Engine[J]. Metal Forming Technology, 2010, 0(5): 71-74 |
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| Authors: | ZHU Lei GONG Jie MEI Hua-sheng |
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| Affiliation: | (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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| Abstract: | 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 microstrueture of crankshaft uniform, and the steel with less content of nonmetallic inclusions should be selected. |
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| Keywords: | crankshaft fracture failure analysis fracture inspection microstrueture examination macrostructure examination energy spectrum analysis |
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