| 电厂三级过热器弯管失效分析 |
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| 引用本文： | 周翠兰 郭瑞萍. 电厂三级过热器弯管失效分析[J]. 理化检验(物理分册), 1999, 35(5): 225-226 |
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| 作者姓名： | 周翠兰 郭瑞萍 |
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| 作者单位： | 太原理工大学材料系!太原030024 |
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| 摘 要： | 用金相、电镜、光谱分析等手段对三级过热器弯管失效进行了分析。结果表明，晶界处有铬的化合物所析出，具有晶间腐蚀倾向；材质夹杂和多且颗粒较大；奥氏体晶料不均匀，有严重混晶，上述综合因素导致弯管断裂。
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| 关 键 词： | 过热器 管 混晶 失效分析 电厂锅炉 锅炉 |
FAILURE ANALYSIS OF THIRD STAGE SUPERHEATER BEND PIPE |
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| Zhou cuilan Guo Ruiping. FAILURE ANALYSIS OF THIRD STAGE SUPERHEATER BEND PIPE[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 1999, 35(5): 225-226 |
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| Authors: | Zhou cuilan Guo Ruiping |
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| Affiliation: | Taiyuan University of Technology |
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| Abstract: | Failure of third stage superheater bend pipe was studied by means of optical metallograph, SEM and spectrometer analysis. The results showed that Cr-contaning compounds in grain boundary, which will cause susceptibility to intergranular corrosion, large amount of inclusions, uneven austinate grain size are main factors caused cracking of bend pipe. |
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| Keywords: | Superheater Tube Mixed grain size Failure analysis |
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