| 变电站阻波器吊环断裂原因分析 |
| |
| 引用本文： | 张彦文,陈雪艳,张友登,陈宇,陶勇.变电站阻波器吊环断裂原因分析[J].理化检验(物理分册),2012(11):759-761. |
| |
| 作者姓名： | 张彦文 陈雪艳 张友登 陈宇 陶勇 |
| |
| 作者单位： | 武汉理工大学材料与工程学院;武钢研究院;武钢质检中心 |
| |
| 摘 要： | 变电站阻波器吊环在受力较小的情况下异常断裂。为查清断裂原因，运用宏观检验、扫描电镜及能谱分析、金相检验等方法进行了深入探讨。结果表明：吊环为疲劳断裂，断裂源位于吊环外表面，该部位同时存在机械损伤及应力集中；材料中较多的夹杂物及晶间析出物进一步降低了材料的疲劳强度，以上诸因素共同作用，最终导致了吊环的断裂失效。
|
| 关 键 词： | 疲劳断裂 应力集中 沿晶开裂 晶间析出物 |
Analysis on Fracture Reason of Wave Trap Hanging Ring in Transforming Plant |
| |
| ZHANG Yan-wen,CHEN Xue-yan,ZHANG You-deng,CHEN Yu,TAO Yong.Analysis on Fracture Reason of Wave Trap Hanging Ring in Transforming Plant[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2012(11):759-761. |
| |
| Authors: | ZHANG Yan-wen CHEN Xue-yan ZHANG You-deng CHEN Yu TAO Yong |
| |
| Affiliation: | 1.Science and Technology Materials Institute of Wuhan University,Wuhan 430070,China; 2.Research and Development Center of Wuhan Iron and Steel Company,Wuhan 430080,China; 3.Quality Inspection Center of Wuhan Iron and Steel Company,Wuhan 430080,China) |
| |
| Abstract: | Wave trap hanging ring was fractured abnormally with small stress in a transforming plant. The fracture reason was analyzed by means of macroscopical examination, scanning electronic microscope and energy spectrometer analysis, metallographic examination. The results showed that fatigue fracture occurred in hanging ring, and the fracture source on the surface of hanging ring where mechanical impairment and stress concentration can be found. Many inclusion and intergranular precipitated phase in the material further reduced its fatigue strength. All of these induced the fracture of hanging ring in the end. |
| |
| Keywords: | fatigue fracture stress concentration intergranular cracking intergranular precipitated phase |
| 本文献已被 CNKI 维普 等数据库收录！ |
