| 内燃机21-4N钢排气门热过载疲劳失效 |
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| 引用本文： | 颜钟得,谢光荣,吴健. 内燃机21-4N钢排气门热过载疲劳失效[J]. 机电工程技术, 2006, 35(12): 74-76 |
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| 作者姓名： | 颜钟得 谢光荣 吴健 |
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| 作者单位： | 广东工业大学材料与能源学院,广东广州,510006;广东工业大学材料与能源学院,广东广州,510006;广东工业大学材料与能源学院,广东广州,510006 |
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| 摘 要： | 本文介绍了气门的工作条件、正常失效及21-4N钢排气门强化热处理与层状析出的关系,分析了层状组织对其性能影响和21-4N钢排气门过载“断头”失效的原因。
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| 关 键 词： | 气门 失效 层状析出 晶界 疲劳失效 |
| 文章编号： | 1009-9492（2006）12-0074-03 |
| 收稿时间： | 2006-06-26 |
| 修稿时间： | 2006-06-26 |
21-4N Steel Exhaust Valve Fatigue Fracture Caused by Thermal Overstress |
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| YAN Zhong-de,XIE Guang-rong,WU Jian. 21-4N Steel Exhaust Valve Fatigue Fracture Caused by Thermal Overstress[J]. Mechanical & Electrical Engineering Technology, 2006, 35(12): 74-76 |
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| Authors: | YAN Zhong-de XIE Guang-rong WU Jian |
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| Abstract: | The valve work condition and normal failure are studied in this paper. The heat treatment of 21-4N steel exhaust valve is related to the samdwich separated out. The samdwich affects the valve capability 21-4N steel exhaust valve fatigue fracture is caused by thermal overstress. |
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| Keywords: | valve failure samdwich grain boundary fatigue failure |
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