| 板式空冷器板片开裂失效分析 |
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| 引用本文： | 章强,刘贵昌,张熠,王立达,李敬,曹亮.板式空冷器板片开裂失效分析[J].腐蚀与防护,2011(1). |
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| 作者姓名： | 章强 刘贵昌 张熠 王立达 李敬 曹亮 |
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| 作者单位： | 大连理工大学; |
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| 摘 要： | 某石油炼厂板式空冷器板片在较短时间内发生严重的开裂。根据该厂提供的失效件,采用电子探针、金相显微镜、扫描电镜和电子能谱仪等对开裂板片的成分、金相、断口宏观及微观形貌和腐蚀产物进行了分析。结果表明,板式空冷器最外层板片开裂为应力腐蚀开裂,次外层板片开裂为腐蚀疲劳所致。
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| 关 键 词： | 板式空冷器 板片 应力腐蚀开裂 腐蚀疲劳 |
Fracture Failure Analysis of Plate Air Cooler Sheets |
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| ZHANG Qiang,LIU Gui-chang,ZHANG Yi,WANG Li-da,LI Jing,CAO Liang.Fracture Failure Analysis of Plate Air Cooler Sheets[J].Corrosion & Protection,2011(1). |
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| Authors: | ZHANG Qiang LIU Gui-chang ZHANG Yi WANG Li-da LI Jing CAO Liang |
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| Affiliation: | ZHANG Qiang,LIU Gui-chang,ZHANG Yi,WANG Li-da,LI Jing,CAO Liang (Dalian University of Technology,Dalian 116012,China) |
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| Abstract: | Serious cracking of some plate air cooler sheets occurred in short time when operated in a refinery.The chamical composition,metallography,macro-morphology and micro-morphology of the fractured parts and corrosion products on cracked sheets were analyzed by electron probe microscopic analyzer(EPMA),metallurgic microscopy, scanning electron microscopy(SEM) and energy disperse spectroscopy(EDS).The results showed that the cracking in outer layer of plate air coolers was attributed to stress corrosion cracking... |
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| Keywords: | plate air cooler sheet stress corrosion cracking(SCC) corrosion fatigue |
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