Journal article 598 views
High temperature corrosion-fatigue behavior of a shot peened nickel based superalloy
,
P.M. Mignanelli,
Mark Whittaker ,
Ben Cockings,
R. Buckingham,
Martin Bache
Corrosion Science, Volume: 207, Start page: 110577
Swansea University Authors:
Yong Li, Hollie Cockings , Mark Whittaker , Ben Cockings, Martin Bache
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DOI (Published version): 10.1016/j.corsci.2022.110577
Abstract
As turbine entry temperatures (TET) in modern gas turbine engines continue to increase, Type II hot corrosion has the potential to be a significant damage mechanism at turbine disk rims as temperatures approach 700°C. Therefore, assessment of the effect of hot corrosion damage is essential. In the c...
| Published in: | Corrosion Science |
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| ISSN: | 0010-938X |
| Published: |
Netherlands
Elsevier BV
2022
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa60843 |
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| Abstract: |
As turbine entry temperatures (TET) in modern gas turbine engines continue to increase, Type II hot corrosion has the potential to be a significant damage mechanism at turbine disk rims as temperatures approach 700°C. Therefore, assessment of the effect of hot corrosion damage is essential. In the current research, low cycle corrosion-fatigue behavior of a newly developed polycrystalline nickel superalloy was investigated. The testing programme involved consideration of the variations in fatigue life brought about by changes in surface condition when tested at 700°C in a representative service environment. The high temperature corrosion-fatigue resistance behavior is compared with a previous generation alloy, and detailed fractography to identify the mechanisms of fatigue crack initiation is discussed. High temperature corrosion-fatigue behavior is also correlated to the shot peened work hardened layer. |
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| Keywords: |
Corrosion-fatigue, nickel superalloy, type II hot corrosion, shot peening |
| College: |
Faculty of Science and Engineering |
| Funders: |
The current research was funded under the Aerospace Technology Institute (ATI) CAJoRR, UK project. |
| Start Page: |
110577 |