| 轻型汽车后桥半轴断裂件的组织及断口特征 |
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| 引用本文： | 潘晶,晏建武,王伟兰. 轻型汽车后桥半轴断裂件的组织及断口特征[J]. 宁波大学学报(理工版), 2004, 17(2): 179-181 |
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| 作者姓名： | 潘晶 晏建武 王伟兰 |
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| 作者单位： | 宁波大学,工学院,浙江,宁波315211;南昌航空工业学院,材料科学与工程系,江西,南昌,330034 |
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| 摘 要： | 采用光学显微镜和扫描电子显微镜等手段，对某轻型汽车40Cr后桥半轴断裂件的组织及断口特征进行了分析结果表明：半轴在调质处理时的淬火温度不够高，使其表层和心部组织中存在较多的铁素体相，造成了工件最终的硬度和疲劳强度不足，导致半轴在使用中发生扭转疲劳断裂．
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| 关 键 词： | 40Cr钢 后桥半轴 显微组织 断口形貌 |
| 文章编号： | 1001-5132(2004)02-0179-03 |
| 修稿时间： | 2003-06-10 |
The Microstructure and Fracture Features of 40Cr Rear Half-Axle Used in a Car |
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| PAN Jing,YAN Jian-wu,WANG Wei-lan. The Microstructure and Fracture Features of 40Cr Rear Half-Axle Used in a Car[J]. Journal of Ningbo University(Natural Science and Engineering Edition), 2004, 17(2): 179-181 |
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| Authors: | PAN Jing YAN Jian-wu WANG Wei-lan |
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| Affiliation: | PAN Jing1,YAN Jian-wu2,WANG Wei-lan2 |
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| Abstract: | The microstructure and fracture features of 40Cr rear half-axle used in a car were analyzed by optical metalloscope and SEM. The results show that too much ferrite phase is remained in the microstructures of the half-axle after quenching in a lower temperature, which lowers hardness and fatigue strength. This leads to the twisting fatigue failure of the half-axle in use. |
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| Keywords: | 40Cr steel half-axle microstructure fracture morphology |
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