| 热电厂波纹管开裂原因分析 |
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| 引用本文： | 魏翔云,魏绍荣,姚树青. 热电厂波纹管开裂原因分析[J]. 腐蚀科学与防护技术, 2005, 17(3): 217-218 |
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| 作者姓名： | 魏翔云 魏绍荣 姚树青 |
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| 作者单位： | 1. 中国科学院金属研究所,金属腐蚀与防护国家重点实验室,沈阳,110016
2. 辽阳波纹管厂,辽阳,111000 |
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| 摘 要： | 对某电厂使用几百小时而破损的3层不锈钢波纹管，进行了宏观、金相、断口形貌及腐蚀产物的分析.结果表明，波纹管破裂从内层开始，逐渐引发中间层和外层开裂；开裂是由于内层水蒸气结露，水蒸气中的氯化物浓缩而导致穿晶型应力腐蚀开裂；应力来自工作应力和冷加工残余应力.管壁上除环向裂纹，还有轴向裂纹,呈树枝状.
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| 关 键 词： | 304不锈钢 波纹管 应力腐蚀开裂 |
| 文章编号： | 1002-6495(2005)03-0217-02 |
| 收稿时间： | 2005-01-20 |
| 修稿时间： | 2005-01-20 |
FAILURE ANALYSIS OF STAINLESS STEEL BELLOWS USED IN POWER STATION |
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| WEI Xiang-yun,WEI Shao-rong,YAO Shu-qing. FAILURE ANALYSIS OF STAINLESS STEEL BELLOWS USED IN POWER STATION[J]. Corrosion Science and Protection Technology, 2005, 17(3): 217-218 |
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| Authors: | WEI Xiang-yun WEI Shao-rong YAO Shu-qing |
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| Abstract: | The failure analysis of the 304 stainless steel bellows that being used in a power station has been conducted by using optical microscope and scanning electron microscope(SEM).The results showed that the cracking originated from the innerside of the bellows;The cracks of the bellows propagated circuitously and axially with the typical transgranullar stress corrosion cracking features;The cracking was induced by the chlorides in vapor;Both working stress and residual stress due to cold working were responsible for the cracking. |
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| Keywords: | failure analysis 304 stainless steel power station bellows stress corrosion cracking |
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