Failure of Secondary Superheater Tube by Caustic Stress Corrosion Cracking (CSCC)

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• 作者：Alireza Katamipour ; Mohsen Shamshirsaz…
• 关键词：Failure analysis ; ASME SA213 Gr22 ; Creep ; resistant alloys ; Caustic SCC ; Stereomicroscopy ; SEM ; EDX ; Hardness Vickers (HV)
• 刊名：Journal of Failure Analysis and Prevention
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：15
• 期：5
• 页码：583-592
• 全文大小：3,591 KB
• 参考文献：1.A. Movahedi-Rad, S.S. Plasseyed, M. Attarian, Failure analysis of superheater tube. Eng. Fail. Anal. 48, 94鈥?04 (2015)CrossRef
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• 作者单位：Alireza Katamipour (1) (2)
  Mohsen Shamshirsaz (2)
  Abdolhossein Fereidoon (3)
  
  1. Abadan Faculty of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran
  2. Equipment Inspection Department (E.I.D), Abadan Refinery, Abadan, Iran
  3. Faculty of Mechanical Engineering, Semnan University, Semnan, Iran
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Tribology, Corrosion and Coatings
  Characterization and Evaluation Materials
  Mechanics
  Structural Mechanics
  Quality Control, Reliability, Safety and Risk
  
• 出版者：Springer Boston
• ISSN：1864-1245

文摘

Failure analysis of a ruptured superheater tube from a boiler has been carried out. Experiments revealed that the chemical composition of the tube was in correspondence to SA213-T22 standard and had ferrite-pearlite microstructure of 2.25Cr-1Mo steels. Investigations showed that caustic stress corrosion cracking (CSCC) was the predominant mechanism of cracking and failure of the tube. Misuse of boiler feed water, as the supplying water through the attemperator to the superheated steam, in the secondary superheater, and carryover from the steam drum to the superheater resulted in scale buildup and cracking of the CSCC type. Keywords Failure analysis ASME SA213 Gr22 Creep-resistant alloys Caustic SCC Stereomicroscopy SEM EDX Hardness Vickers (HV)