No Cover Image

Journal article 62 views

High temperature corrosion-fatigue behavior of a shot peened nickel based superalloy

Yong Li, Hollie Cockings Orcid Logo, P.M. Mignanelli, Mark Whittaker Orcid Logo, Ben Cockings, R. Buckingham, Martin Bache

Corrosion Science, Volume: 207, Start page: 110577

Swansea University Authors: Yong Li, Hollie Cockings Orcid Logo, Mark Whittaker Orcid Logo, Ben Cockings, Martin Bache

Full text not available from this repository: check for access using links below.

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...

Full description

Published in: Corrosion Science
ISSN: 0010-938X
Published: Netherlands Elsevier BV 2022
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa60843
Tags: Add Tag
No Tags, Be the first to tag this record!
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.
Keywords: Corrosion-fatigue, nickel superalloy, type II hot corrosion, shot peening
College: College of Engineering
Funders: The current research was funded under the Aerospace Technology Institute (ATI) CAJoRR, UK project.
Start Page: 110577