| 大型电机轴锻件断裂失效分析 |
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| 引用本文： | 赖春雷,宋梅.大型电机轴锻件断裂失效分析[J].金属热处理,2006,31(2):98-101. |
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| 作者姓名： | 赖春雷 宋梅 |
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| 作者单位： | 上海电气集团上海电机厂有限公司,技术部,上海,200240 |
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| 摘 要： | 运用金相观察、SEM等方法对断裂的45钢电机轴锻件进行了失效分析。结果表明，由于不正确的热加工，锻件存在很大的残余应力和大型锻造裂纹，随后的车削加工改变了应力分布，导致裂纹尖端应力超过临界应力值，从而发生低应力脆断。
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| 关 键 词： | 断裂 残余应力 裂纹 |
| 文章编号： | 0254-6051（2006）02-0098-04 |
| 收稿时间： | 2005-08-27 |
| 修稿时间： | 2005-08-27 |
Failure Analysis of the Electrical Machine Shaft Forging |
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| LAI Chun-lei,SONG Mei.Failure Analysis of the Electrical Machine Shaft Forging[J].Heat Treatment of Metals,2006,31(2):98-101. |
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| Authors: | LAI Chun-lei SONG Mei |
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| Affiliation: | Technique Department, Shanghai Electric Machinery Co. , Ltd. , Shanghai 200240, China |
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| Abstract: | The failure analysis of the 45 steel shaft forging was carried out by metaUography and SEM. The results show that due to improper hot working process, there are big forged cracks and great residual stress in the forging. The surface cutting can change the distribution of the residual stress near the crack, Low stress brittle fracture occurs when the stress in the tip of crack is over the critical value. |
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| Keywords: | fracture residual stress crack |
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