| EPSRC Reference: |
GR/J34309/01 |
| Title: |
TEMPERATURE AND ENVIRONMENT EFFECTS ON STAGE I CRACK GROWTH AND STAGE I/II TRANSITION IN NI-BASE ALLOYS. |
| Principal Investigator: |
Reed, Professor P |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Engineering Materials |
| Organisation: |
University of Southampton |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 April 1994 |
Ends: |
31 March 1996 |
Value (£): |
89,492
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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Summary on Grant Application Form |
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Single crystal Ni-base test-pieces have been produced where fatigue crack growth can be driven down a single {lll} slip-plane orientated perpendicular to the loading axis. The KI: KII contribution can be varied easily and KI and KII explicitly calculated using a simple anti-symmetric our point bend bar testing system. This should give unambiguous crack growth rate data, that is entirely due to stage I crack growth. Crack propagation can be measured by conventional potential drop methods yielding accurate crack growth rates with little scatter. The effects on slip behaviour (and hence on stage I crack growth and the stage I to stage II crack growth transition) of temperature and environment as well as mixed mode loading can then be determined. The plastic zone shapes and sizes will be examined using TEM and selected area channelling pattern analysis. The overall aim is to establish the factors controlling stage I crack growth and the stage I to stage II crack growth transition in the single crystal and fine-grained polycrystalline forms of the alloy. The single crystal data should model the highest short crack growth rates in the poly-crystalline alloy.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.soton.ac.uk |