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Influence of environmental factors on the corrosion-fatigue response of a nickel-based superalloy / Hollie Cockings, Karen Perkins, Michael Dowd

Materials Science and Technology, Volume: 33, Issue: 9, Pages: 1048 - 1055

Swansea University Authors: Hollie Cockings, Karen Perkins

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Abstract

Nickel disc corrosion is an important area within the gas turbine engine, with the potential to affect the lives of critical rotating parts. To understand the influence of corrosion on such components, it is essential to generate material data in a representative environment; hot corrosion in conjun...

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Published in: Materials Science and Technology
ISSN: 0267-0836 1743-2847
Published: United Kingdom Taylor & Francis 2017
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa39183
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Abstract: Nickel disc corrosion is an important area within the gas turbine engine, with the potential to affect the lives of critical rotating parts. To understand the influence of corrosion on such components, it is essential to generate material data in a representative environment; hot corrosion in conjunction with cyclic loading. A comprehensive assessment of the behaviour of alloys U720Li and RR1000 in a laboratory-simulated environment has been undertaken to explore and replicate corrosion-fatigue features that have been identified in service. Key parameters such as salt loading (flux) and variations in mechanical stress cycle have been examined and have shown to modify the corrosion morphology and resulting fatigue life of the material.
Keywords: Hot corrosion, High temperature corrosion-fatigue, Nickel-based superalloys, Low-cycle fatigue, Mechanical testing, Sulphidation, Gas tubine engine, Power generation
Issue: 9
Start Page: 1048
End Page: 1055