| 40CrNiMoA钢螺栓断裂原因分析 |
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| 引用本文： | 陈昌达. 40CrNiMoA钢螺栓断裂原因分析[J]. 理化检验(物理分册), 2011, 0(9): 602-604 |
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| 作者姓名： | 陈昌达 |
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| 作者单位： | 贵州黎阳航空发动机公司; |
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| 摘 要： | 通过宏观检验、断口分析、金相检验、硬度测试及化学成分分析等方法对40CrNiMoA钢螺栓断裂的原因进行了分析。结果表明:螺栓的断裂性质为氢脆断裂,产生原因是螺栓制造过程中残留的氢含量过高所致。
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| 关 键 词： | 40CrNiMoA钢 螺栓 氢脆断裂 |
Fracture Cause Analysis of 40CrNiMoA Steel Bolts |
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| CHEN Chang-da. Fracture Cause Analysis of 40CrNiMoA Steel Bolts[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2011, 0(9): 602-604 |
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| Authors: | CHEN Chang-da |
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| Affiliation: | CHEN Chang-da (Guizhou Liyang Aero-engine Company,Anshun 561102,China) |
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| Abstract: | Fracture cause of 40CrNiMoA steel bolts was analyzed by means of macroscopic examination,fracture analysis,metallographic examination,hardness testing and chemical composition analysis.The results showed that the fracture mechanism was the hydrogen brittleness fracture,the reason of fracture was due to high absorption content of hydrogen during producing process of the bolts. |
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| Keywords: | 40CrNiMoA steel bolt hydrogen brittleness fracture |
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