|
|||||
|
|
| 汽车前轴早期断裂失效分析 | |
| 引用本文： | 李晓东,张海,马鸣图,冯史勋.汽车前轴早期断裂失效分析[J].机械工程材料,2004,28(5):52-54. |
| 作者姓名： | 李晓东 张海 马鸣图 冯史勋 |
| 作者单位： | 1. 后勤工程学院油料应用工程系,重庆,400016 2. 重庆建锋摩托车配件总厂 3. 重庆失效分析及预防中心,重庆,400039 |
| 摘 要： | 通过SEM断口分析及金相组织、力学性能、微区成分分析等检验，得出某汽车前轴早期失效的主要原因是由于锻热工艺控制不当，造成零件表面脱碳和金相组织粗大，材料韧性储备低(冲击值仅为10J)，一旦萌生疲劳裂纹则将迅速扩展导致前轴断裂。 |
| 关 键 词： | 前轴 断裂 失效分析 汽车 |
| 文章编号： | 1000-3738(2004)05-0052-03 |
Analysis for Early Fracture of Heavv Duty Truck Front Axle |
|
| LI Xiao-dong,ZHANG Hai,MA Ming-tu,FENG Shi-xun.Analysis for Early Fracture of Heavv Duty Truck Front Axle[J].Materials For Mechanical Engineering,2004,28(5):52-54. | |
| Authors: | LI Xiao-dong ZHANG Hai MA Ming-tu FENG Shi-xun |
| Affiliation: | LI Xiao-dong~1,ZHANG Hai~2,MA Ming-tu~3,FENG Shi-xun~3, |
| Abstract: | The reason of early failure of a heavy duty truck front axle was analyzd through SEM observation of fracture surface, examination and microarea composition, metallographic structure and mechanical properties. The very low impact toughness resulting from coarse microstructure with glanular bainite and surface decarbonization was the main reason, indicating improper heat treatment and forging. Once fatigue crack initiated, it rapidly propagated and caused early failure of the front axle. |
| Keywords: | front axle fracture failure analysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |