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Volume 16
Issue 6
10.3390/met16060631
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

High Cycle Fatigue and Range-Mean Performance of Emerging Titanium Alloys for Aeroengine Applications

by
Peter Davies
1,
Sean John
1,
Helen Davies
1,
Martin Bache
1,*,
Kate Fox
2,
Christopher Collins
2,
Nigel Martin
2 and
Rebecca Sandala
2
1
Institute of Structural Materials, Swansea University, Bay Campus, Fabian Way, Crymlyn Burrows, Swansea SA1 8EN, UK
2
Rolls-Royce plc, P.O. Box 31, Derby DE24 8BJ, UK
*
Author to whom correspondence should be addressed.
Metals 2026, 16(6), 631; https://doi.org/10.3390/met16060631 (registering DOI)
Submission received: 27 April 2026 / Revised: 27 May 2026 / Accepted: 4 June 2026 / Published: 8 June 2026
(This article belongs to the Section Structural Integrity of Metals)
Versions Notes

Abstract

Four alpha-beta titanium alloys, containing increased beta stabilising elements when compared to the well established Ti-6Al-4V, were previously characterised for their low cycle fatigue behaviour and resistance to cold dwell sensitivity. The same four alloys are now assessed for high cycle fatigue performance, employing plain cylindrical and notched specimen geometries. Fatigue strength under load-controlled cycling was measured under two contrasting mean stress conditions, a fully reversed R = −1 waveform and a positive mean stress waveform of R = 0.3. The role of microstructure and micro-texture are considered to explain the relative high cycle fatigue behaviour of each alloy and in particular the mechanisms responsible for fatigue crack initiation. The data are subsequently employed to construct “safe stress” range-mean diagrams.
Keywords: titanium alloys; high cycle fatigue; notch fatigue; range-mean behaviour titanium alloys; high cycle fatigue; notch fatigue; range-mean behaviour

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MDPI and ACS Style

Davies, P.; John, S.; Davies, H.; Bache, M.; Fox, K.; Collins, C.; Martin, N.; Sandala, R. High Cycle Fatigue and Range-Mean Performance of Emerging Titanium Alloys for Aeroengine Applications. Metals 2026, 16, 631. https://doi.org/10.3390/met16060631

AMA Style

Davies P, John S, Davies H, Bache M, Fox K, Collins C, Martin N, Sandala R. High Cycle Fatigue and Range-Mean Performance of Emerging Titanium Alloys for Aeroengine Applications. Metals. 2026; 16(6):631. https://doi.org/10.3390/met16060631

Chicago/Turabian Style

Davies, Peter, Sean John, Helen Davies, Martin Bache, Kate Fox, Christopher Collins, Nigel Martin, and Rebecca Sandala. 2026. "High Cycle Fatigue and Range-Mean Performance of Emerging Titanium Alloys for Aeroengine Applications" Metals 16, no. 6: 631. https://doi.org/10.3390/met16060631

APA Style

Davies, P., John, S., Davies, H., Bache, M., Fox, K., Collins, C., Martin, N., & Sandala, R. (2026). High Cycle Fatigue and Range-Mean Performance of Emerging Titanium Alloys for Aeroengine Applications. Metals, 16(6), 631. https://doi.org/10.3390/met16060631

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