Experimental and modelling methodologies for fatigue crack nucleation around non-metallic inclusions in polycrystalline Ni-base superalloy.
Find Similar History 35 Claim Ownership Request Data Change Add FavouriteTitle
Experimental and modelling methodologies for fatigue crack nucleation around non-metallic inclusions in polycrystalline Ni-base superalloy.
CoPED ID
4d3e4d44-352e-42c4-8a3c-8e0ff6d93c17
Status
Closed
Value
No funds listed.
Start Date
Sept. 29, 2017
End Date
June 29, 2021
Description
Powder metallurgy has become the preferred method for producing nickel-superalloy turbine disks. An unavoidable side-effect of powder metallurgy is the propensity to include non-metallic agglomerates in the nickel matrix. These inclusions may create a locally active stress field that may drive the nucleation of cracks. Recent studies have investigated different criteria for crack nucleation at room temperature. The real working conditions of a jet engine turbine are at high temperature and work remains to be done on crack nucleation in such an environment. This project aims to investigate the criteria for which cracks appear around an inclusion subject to high-temperature conditions by using experimental and modelling techniques.
| Imperial College London | LEAD_ORG |
| Rolls-Royce plc | STUDENT_PP_ORG |
| Fionn Dunne | SUPER_PER |
| Alexander Bergsmo | STUDENT_PER |
Subjects by relevance
- Metallurgy
- Powder metallurgy
- Temperature
Extracted key phrases
- Crack nucleation
- Temperature condition
- High temperature
- Metallic inclusion
- Experimental
- Superalloy turbine disk
- Room temperature
- Inclusion subject
- Modelling methodology
- Real working condition
- Jet engine turbine
- Metallic agglomerate
- Modelling technique
- Base superalloy