Failure analysis of cracked connecting piece of BFW preheater

Venkataswamy, MA and Sujata, M and Parameswara, MA and Bhaumik, SK (2004) Failure analysis of cracked connecting piece of BFW preheater. Project Report. National Aerospace Laboratories, Bangalore.

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It was reported that the stainless steel elbow connecting two heat exchangers cracked within two months of service. Analysis revealed that a number of cracks nucleated in the vicinity of the weld and propagated radially. Microstructural and fractographic analyses suggest that the failure was due to stress corrosion cracking (SCC). High concentration of KOH in the process gas was responsible for the SCC. A detailed analysis of the failure is presented in the report.

Item Type: Monograph (Project Report)
Uncontrolled Keywords: Boiler feed water;304L stainless steel;stress corrosion cracking;caustic cracking
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Mrs Manoranjitha M D
Date Deposited: 25 Jul 2011 05:13
Last Modified: 25 Jul 2011 05:13

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