| 高强度螺栓断裂的SEM分析 |
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| 引用本文： | 许宏飞,张永信,李贵才,薛跃军,翟景. 高强度螺栓断裂的SEM分析[J]. 理化检验(物理分册), 2006, 42(1): 28-30 |
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| 作者姓名： | 许宏飞 张永信 李贵才 薛跃军 翟景 |
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| 作者单位： | 中国兵器工业第五二研究所烟台分所,烟台,264003 |
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| 摘 要： | 利用扫描电镜对高强度螺栓断口进行了微观形貌观察与分析。结果表明，由于冶炼或浇注时，钢液内混入了耐火材料碎块，其杂质元素向晶界偏聚引起局域性的晶界脆化，从而导致螺栓在较低应力状态下发生断裂。
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| 关 键 词： | 40Cr钢 螺栓 扫描电镜 断裂 夹杂物 |
| 文章编号： | 1001-4012（2006）01-0028-03 |
| 收稿时间： | 2005-07-08 |
| 修稿时间： | 2005-07-08 |
THE FRACTURE ANALYSIS OF THE HIGH STRENGTH STUD BOLT BY SEM |
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| XU Hong-fei,ZHANG Yong-xin,LI Gui-cai,XUE Yue-jun,ZHAI Jing. THE FRACTURE ANALYSIS OF THE HIGH STRENGTH STUD BOLT BY SEM[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2006, 42(1): 28-30 |
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| Authors: | XU Hong-fei ZHANG Yong-xin LI Gui-cai XUE Yue-jun ZHAI Jing |
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| Affiliation: | No. 52 Institute of China Ordnance Industry, Yantai Brach, Yantai 264003, China |
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| Abstract: | Based on the microanalyse,the fracture of the high strength stud bolt was analyzed by scanning electron microscope(SEM).It was observed that the tramp elements in the fire-proof material particles have separated out to the crystal boundary so that lead to local brittle crystal boundary,therefore the stud bolt was broken under small stress conditions. |
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| Keywords: | 40Cr steel Bolt SEM Failure Inclusion |
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