Paper Title:
Failure Analysis of Steel Superheater Tube Fractured in a Boiler of a Power Plant
  Abstract

This paper presents a case study of ASME SA213 type-T22 alloy steel superheater tube that failed in a boiler of a power plant. The failed superheater tube was investigated by visual examination, metallography, optical microscopy, electron fractography, and hardness testing. Microscopic examinations revealed inclusion, pre-existing micro-cracks and cementite precipitates at the grain boundaries in the microstructure; which were thought to be one of the major causes of failure of the superheater tube. Another major cause failure of boiler type T-22 was found to be creep failure because the boiler had been under use for a long time (36573 hours) at high steam temperature of around 420 °C with 130 bar pressure. Finally, recommendations have been suggested to improve the material characteristics and properties of the superheater tube for application in boiler of the power plant.

  Info
Periodical
Key Engineering Materials (Volumes 462-463)
Edited by
Ahmad Kamal Ariffin, Shahrum Abdullah, Aidy Ali, Andanastuti Muchtar, Mariyam Jameelah Ghazali and Zainuddin Sajuri
Pages
467-471
DOI
10.4028/www.scientific.net/KEM.462-463.467
Citation
Z. Huda, "Failure Analysis of Steel Superheater Tube Fractured in a Boiler of a Power Plant", Key Engineering Materials, Vols. 462-463, pp. 467-471, 2011
Online since
January 2011
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Price
$32.00
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