On the Impact of an Integrated HIP Treatment on the Very High Cycle Fatigue Life of Ni-Based SX Superalloys

On the Impact of an Integrated HIP Treatment on the Very High Cycle Fatigue Life of Ni-Based SX Superalloys

The influence of an integrated hot isostatic pressing (HIP) treatment was investigated for two single-crystalline nickel-based superalloys under very high cycle fatigue at 1000 °C in fully reversed conditions ( R ε  =  − 1). The fatigue life is improved significantly by performing heat-treatments wi...

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Veröffentlicht in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2023-05, Vol.54 (5), p.1469-1483
Hauptverfasser: Ormastroni, Luciana Maria Bortoluci, Lopez-Galilea, Inmaculada, Ruttert, Benjamin, Weber, Sebastian, Mauget, Florent, Villechaise, Patrick, Cormier, Jonathan
Format: Artikel
Sprache:eng
Schlagworte:
Aircraft
Annealing
Characterization and Evaluation of Materials
Chemical Sciences
Chemistry and Materials Science
Cooling
Crack initiation
Engines
Fatigue life
Fourth European Symposium on Superalloys and their Applications
Grain boundaries
Heat treating
High cycle fatigue
Hot isostatic pressing
Material chemistry
Materials Science
Metallic Materials
Microstructure
Nanotechnology
Nickel base alloys
Precipitation hardening
Single crystals
Structural Materials
Superalloys
Surfaces and Interfaces
Temperature
Thin Films
Topical Collection: Processing and Applications of Superalloys
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Zusammenfassung:The influence of an integrated hot isostatic pressing (HIP) treatment was investigated for two single-crystalline nickel-based superalloys under very high cycle fatigue at 1000 °C in fully reversed conditions ( R ε  =  − 1). The fatigue life is improved significantly by performing heat-treatments within the HIP unit. The HIP-compacted pore morphology and its impact on the crack initiation is considered as well. The HIPed specimens fail at low-angle grain boundary structures that have developed around the compacted casting pores.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-022-06882-0