The University of Southampton
University of Southampton Institutional Repository

A comparison of high temperature fatigue crack propagation in various sub-solvus heat treated turbine disc alloys

Everitt, S., Starink, M.J., Pang, H.T., Wilcock, I.M., Henderson, M.B. and Reed, P.A.S. (2007) A comparison of high temperature fatigue crack propagation in various sub-solvus heat treated turbine disc alloys Materials Science and Technology, 23, pp. 1419-1423. (doi:10.1179/174328407X213189).

Record type: Article

Abstract

The microstructure and fatigue performance of three sub-solvus heat treated nickel based disc superalloys for turbine disc applications are reported. The alloy variants studied are RR1000, N18 and Udimet 720 Low Interstitial (U720Li), with the latter tested both in a standard and large grain variant (LG). Their microstructures are examined in terms of grain and gamma prime size. Fatigue crack growth (FCG) rates for all materials at 650ºC show that RR1000 provides the best performance, followed by U720Li-LG, N18 and U720Li. In general, the failure modes become increasingly intergranular with increasing ?K. Some of the variations in FCG rate between the alloys are due to reduction in grain boundary oxidation processes with increased grain size, but more subtle interplays between grain boundary character, alloy composition and slip character are also important

PDF Everitt_et_al_Mater_Sci_Techn_23_2007_1419.pdf - Other
Download (2MB)

More information

Published date: 2007
Keywords: N18, U720Li, U720Li-LG, RR1000, nickel superalloy, fatigue crack propagation, turbine disc alloys, mc carbide, creep

Identifiers

Local EPrints ID: 45815
URI: http://eprints.soton.ac.uk/id/eprint/45815
ISSN: 0267-0836
PURE UUID: 7ab06575-954a-4992-8c6b-0fe88daf4f46
ORCID for P.A.S. Reed: ORCID iD orcid.org/0000-0002-2258-0347

Catalogue record

Date deposited: 12 Apr 2007
Last modified: 17 Jul 2017 15:11

Export record

Altmetrics

Contributors

Author: S. Everitt
Author: M.J. Starink
Author: H.T. Pang
Author: I.M. Wilcock
Author: M.B. Henderson
Author: P.A.S. Reed ORCID iD

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×