The effect of phase angle on crack growth mechanisms under thermo-mechanical fatigue loading

Jones, J.; Whittaker, M.; Lancaster, R.; Hyde, C.; Rouse, J.; Engel, B.; Pattison, S.; Stekovic, S.; Jackson, C.; Li, H. Y.

Abstract

© 2020 Elsevier Ltd The current paper describes TMF crack growth behaviour in an advanced nickel-based superalloy. Changes in behaviour are examined which occur as a function of the phase angle between applied stress and temperature. The fractography of the failed specimens reveals changes from transgranular to intergranular growth between high and low phase angle tests as a result of the onset of high temperature damage mechanisms. More targeted testing has also been undertaken to isolate the contributions of these mechanisms, with specific transitions in behaviour becoming clear in 90° diamond cycles, where dynamic crack growth and oxidation strongly interact.

Citation

Jones, J., Whittaker, M., Lancaster, R., Hyde, C., Rouse, J., Engel, B., …Li, H. Y. (2020). The effect of phase angle on crack growth mechanisms under thermo-mechanical fatigue loading. International Journal of Fatigue, 135, Article 105539. https://doi.org/10.1016/j.ijfatigue.2020.105539

• Journal Article Type: Article
• Acceptance Date: Feb 11, 2020
• Online Publication Date: Feb 16, 2020
• Publication Date: 2020-06
• Deposit Date: Mar 10, 2020
• Publicly Available Date: Feb 17, 2021
• Journal: International Journal of Fatigue
• Print ISSN: 0142-1123
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 135
• Article Number: 105539
• DOI: https://doi.org/10.1016/j.ijfatigue.2020.105539
• Keywords: Mechanical Engineering; Modelling and Simulation; Industrial and Manufacturing Engineering; General Materials Science; Mechanics of Materials
• Public URL: https://nottingham-repository.worktribe.com/output/3974475
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0142112320300700