Investigating the Dislocation-Driven Micro-mechanical Response Under Non-isothermal Creep Conditions in Single-Crystal Superalloys
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Publication Date
2018-09-01Journal Title
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
ISSN
1073-5623
Publisher
Springer
Volume
49
Issue
9
Pages
3988-4002
Type
Article
Metadata
Show full item recordCitation
Schwalbe, C., Cormier, J., Jones, C., Galindo-Nava, E., & Rae, C. (2018). Investigating the Dislocation-Driven Micro-mechanical Response Under Non-isothermal Creep Conditions in Single-Crystal Superalloys. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 49 (9), 3988-4002. https://doi.org/10.1007/s11661-018-4764-3
Abstract
The creep responses of the superalloy CMSX-4 under thermal cycling conditions (900-1050ºC) and constant load (200 MPa) was analyzed using TEM dislocation analysis and compared to the modelled evolution of key creep parameters. By studying tests interrupted at different stages of creep, it is argued that the thermal cycling creep rate under these conditions depends on the creation of interfacial dislocation networks and their disintegration by the -shear of dissimilar Burgers vector pairs.
Sponsorship
The authors would like to thank Rolls-Royce plc and the Engineering and Physical Sciences Research Council (EPSRC) for financial support under the Strategic Partnership, Grant Numbers EP/H022309/1 and EP/H500375/1. E.I. Galindo-Nava would like to acknowledge the Royal Academy of Engineering for his research fellowship funding.
Funder references
EPSRC (1505208)
EPSRC (EP/H500375/1)
UNIVERSITY OF BIRMINGHAM (FB EPSRC) (EP/H022309/1)
EPSRC (EP/M005607/1)
Identifiers
External DOI: https://doi.org/10.1007/s11661-018-4764-3
This record's URL: https://www.repository.cam.ac.uk/handle/1810/283554