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ASM Failure Analysis Case Histories

Handbook of Case Histories in Failure Analysis

Edited by
Khlefa A. Esaklul
Khlefa A. Esaklul
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ASM International
Volume
2
ISBN electronic:
978-1-62708-215-0
Publication date:
1993
Book Chapter

Dealloying in Aluminum Bronze Components

By
Carl J. Czajkowski
Carl J. Czajkowski
Department of Nuclear Energy, Brookhaven National Laboratory
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Published:
1993
Page range:
172 - 176

Abstract

Various aluminum bronze valves and fittings on the essential cooling water system at a nuclear plant were found to be leaking. The leakage was limited to small-bore socket-welded components. Four specimens were examined: three castings (an ASME SB-148 CA 952 elbow from a small-bore fitting and two ASME SB-148 CA 954 valve bodies) and an entire valve assembly. The leaks were found to be in the socket-weld crevice area and had resulted from dealloying. It was recommended that the weld joint geometry be modified.

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Carl J. Czajkowski, 1993. "Dealloying in Aluminum Bronze Components", Handbook of Case Histories in Failure Analysis, Khlefa A. Esaklul

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