Wear characteristics of commercial gas turbine components

A. A. Pauzi, Mariyam Jameelah Ghazali, S. Mohd Yunus, Wan Fathul Hakim W. Zamri, Che Husna Azhari, S. Husin

Research output: Contribution to journalArticle

Abstract

Wear is one of the common degradations in a commercial gas turbine. A stainless steel grade 304 (SS 304) fuel nozzle and its collar made of nickel-based superalloy (Hastelloy X) are two vital components that normally suffer from rapid wear. During an installation, the fuel nozzle is slotted into the collar of the combustion liner. In operation, these two surfaces are subjected to high pressure from the fuel combustion, hence continuously rubbing against each other causes vibrations. During the start–stop operation, these surfaces had undergone a large relative motion. The vibration is the main cause of the wear occurrence on the surfaces. Physical properties of the worn surfaces were obtained through visual observations: wear measurement, hardness and microstructure examination. Through visual observations, fretting wear was mainly suspected as the dominant wear mode, particularly after 8,000 of running hours at high temperature and vibration. In short, this paper discusses the preliminary findings of wear on the fuel nozzle and its collar. It also discusses the changes in the mechanical properties before and after the operation. Solutions for mitigating the problem were discussed.

Original languageEnglish
Pages (from-to)82-85
Number of pages4
JournalTribology - Materials, Surfaces and Interfaces
Volume10
Issue number2
DOIs
Publication statusPublished - 2 Apr 2016

Fingerprint

Turbine components
Gas turbines
Wear of materials
Nozzles
Stainless Steel
Nickel
Superalloys
Stainless steel
Physical properties
Hardness
Degradation
Mechanical properties
Microstructure

Keywords

  • Combustion and gas turbine
  • Fretting
  • Fuel nozzle
  • Wear

ASJC Scopus subject areas

  • Mechanical Engineering
  • Materials Science(all)

Cite this

Wear characteristics of commercial gas turbine components. / Pauzi, A. A.; Ghazali, Mariyam Jameelah; Mohd Yunus, S.; W. Zamri, Wan Fathul Hakim; Azhari, Che Husna; Husin, S.

In: Tribology - Materials, Surfaces and Interfaces, Vol. 10, No. 2, 02.04.2016, p. 82-85.

Research output: Contribution to journalArticle

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