Failures of Forged End Bells on Large Electric Generators

doi:10.31399/asm.fach.modes.c9001724

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ASM Failure Analysis Case Histories

ASM Failure Analysis Case Histories: Failure Modes and Mechanisms

ASM International

DOI:

https://doi.org/10.31399/asm.fach.modes.9781627082341

ISBN electronic:

978-1-62708-234-1

Publication date:

2019

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Abstract

Forged austenitic steel rings used on rotor shafts in two 100,000 kW generators burst from overstressing in a region of ventilation holes. A variety of causes contributed to the brittle fractures in the ductile austenitic alloy, including stress concentration by holes, work hardened metal in the bores, and a variable pattern of residual stress.

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Failures of Forged End Bells on Large Electric Generators

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Sept. 30 – Oct. 4 | Cleveland, Ohio

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