| EPSRC Reference: |
GR/R10431/01 |
| Title: |
Self-Consistent Modelling and Diffraction Study of Internal Stresses In Bcc and Hcp Polycrystals |
| Principal Investigator: |
Korsunsky, Professor AM |
| Other Investigators: |
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| Department: |
Engineering Science |
| Organisation: |
University of Oxford |
| Scheme: |
Fast Stream |
| Starts: |
04 December 2000 |
Ends: |
03 December 2003 |
Value (£): |
61,002
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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| EPSRC Industrial Sector Classifications: |
| Aerospace, Defence and Marine |
Transport Systems and Vehicles |
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Summary on Grant Application Form |
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A co-ordinated experimental and modelling study of polycrystalline deformation and internal stress development in polycrystals of important bcc and hcp structural materials will be carried out. Diffraction of beams of penetrating radiation (neutrons at ISIS and ILL, and synchrotron X-rays at the ESRF) on samples and components subjected to residual and live in-situ stresses will be used to collect detailed data on the internal stress evolution during straining. The data will be used to develop and validate elasto-plastic self-consistent (EPSC) models for these materials. The EPSC approach has recently become established for fcc metals, but so far does not include further important classes of structural metallic alloys. The systems targeted in the present study are ferritic steels (as a representative of bcc structure), titanium alloys (hcp structure), and two-phase materials (e.g. duplex steels). The approach will be used to characterise the evolution of intergranular stresses during monotonic and cyclic loading of polycrystalline samples, which will give a new and improved insight into the influence exerted by the internal stresses on the performance and service life of structural materials.
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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.ox.ac.uk |