Creep, fatigue and microstructural degradation in gas turbine superalloys

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Abstract

Creep and fatigue are important and life-limiting damage mechanisms for many gas turbine components and therefore must be accounted for in design. Creep is promoted by high levels of stress and temperature that also drive microstructural changes in turbine materials. Fatigue is caused by fluctuating loads from, for example, rotation, vibration or thermal cycling, and can also limit component design and life at more modest temperatures. The main characteristics of creep, fatigue, microstructural damage and their combined impact are introduced below, with emphasis on aspects relevant in life assessment of high temperature components such as turbine blades made of superalloys.
Original languageEnglish
Title of host publicationPower plant life management and performance improvement
EditorsJohn E. Oakey
PublisherWoodhead Publishing
Chapter8
Pages307-329
ISBN (Electronic)978-0-85709-380-6
ISBN (Print)978-1-84569-726-6
DOIs
Publication statusPublished - 2011
MoE publication typeD2 Article in professional manuals or guides or professional information systems or text book material

Publication series

SeriesWoodhead publishing series in energy
Volume23

Fingerprint

Superalloys
Gas turbines
Creep
Fatigue of materials
Degradation
Turbines
Turbine components
Thermal cycling
Temperature
Turbomachine blades

Keywords

  • creep
  • fatigue
  • microstructure
  • degradation

Cite this

Auerkari, P. (2011). Creep, fatigue and microstructural degradation in gas turbine superalloys. In J. E. Oakey (Ed.), Power plant life management and performance improvement (pp. 307-329). Woodhead Publishing. Woodhead publishing series in energy, Vol.. 23 https://doi.org/10.1533/9780857093806.3.307
Auerkari, Pertti. / Creep, fatigue and microstructural degradation in gas turbine superalloys. Power plant life management and performance improvement. editor / John E. Oakey. Woodhead Publishing, 2011. pp. 307-329 (Woodhead publishing series in energy, Vol. 23).
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Auerkari, P 2011, Creep, fatigue and microstructural degradation in gas turbine superalloys. in JE Oakey (ed.), Power plant life management and performance improvement. Woodhead Publishing, Woodhead publishing series in energy, vol. 23, pp. 307-329. https://doi.org/10.1533/9780857093806.3.307

Creep, fatigue and microstructural degradation in gas turbine superalloys. / Auerkari, Pertti.

Power plant life management and performance improvement. ed. / John E. Oakey. Woodhead Publishing, 2011. p. 307-329 (Woodhead publishing series in energy, Vol. 23).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

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AB - Creep and fatigue are important and life-limiting damage mechanisms for many gas turbine components and therefore must be accounted for in design. Creep is promoted by high levels of stress and temperature that also drive microstructural changes in turbine materials. Fatigue is caused by fluctuating loads from, for example, rotation, vibration or thermal cycling, and can also limit component design and life at more modest temperatures. The main characteristics of creep, fatigue, microstructural damage and their combined impact are introduced below, with emphasis on aspects relevant in life assessment of high temperature components such as turbine blades made of superalloys.

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Auerkari P. Creep, fatigue and microstructural degradation in gas turbine superalloys. In Oakey JE, editor, Power plant life management and performance improvement. Woodhead Publishing. 2011. p. 307-329. (Woodhead publishing series in energy, Vol. 23). https://doi.org/10.1533/9780857093806.3.307