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ASM Failure Analysis Case Histories
Handbook of Case Histories in Failure Analysis
Edited by
ASM International
Volume
1
ISBN electronic:
978-1-62708-214-3
Publication date:
1992
Book Chapter
Corrosion Failure of Four Pump Impellers
By
G. Mark Tanner
G. Mark Tanner
Mechanical and Materials Engineering Department, Radian Corporation
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Published:1992
Abstract
Copper alloy (C83600) impellers from two different feed pumps that supplied water to a 2-year-old boiler failed repeatedly. Examination by various methods indicated that the failures were caused by sulfide attack that concentrated in shrinkage voids in the castings. Two alternatives to prevent future failures were recommended: changing the impeller composition to a cast stainless steel, or implementing stricter nondestructive evaluation requirements for copper alloy castings.
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G. Mark Tanner, Corrosion Failure of Four Pump Impellers, Handbook of Case Histories in Failure Analysis, Vol 1, Edited By Khlefa A. Esaklul, ASM International, 1992, p 261–265, https://doi.org/10.31399/asm.fach.v01.c9001083
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