Handbook of Case Histories in Failure Analysis
Failure of Brass Heat Exchanger Tubes
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Published:1992
Abstract
A failure analysis was conducted on brass alloy 270 heat exchanger tubes that were pulled from a unit used to cool oil for the speed regulators and thrust bearings of a hydroelectric power plant. The tubes began to leak after approximately 5.5 years of service. Macrophotography and scanning electron microscopy were used to examine samples from the tubes. An energy-dispersive electron microprobe analysis was carried out to evaluate the zinc distribution. Results showed that the failure was due to dezincification. Replacement of the tubes with new tubes fabricated from a dezincification-resistant alloy was recommended.
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Member Sign InM.Z. Sebrão, E.T. Serra, Failure of Brass Heat Exchanger Tubes, Handbook of Case Histories in Failure Analysis, Vol 1, Edited By Khlefa A. Esaklul, ASM International, 1992, p 115–117, https://doi.org/10.31399/asm.fach.v01.c9001045
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