| EPSRC Reference: |
GR/R05307/01 |
| Title: |
Ductility and Cracking In High Nb Tial Alloys |
| Principal Investigator: |
Wu, Professor X |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
IRC in Materials Processing |
| Organisation: |
University of Birmingham |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 April 2001 |
Ends: |
31 March 2004 |
Value (£): |
216,046
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
Materials Processing |
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| EPSRC Industrial Sector Classifications: |
| Aerospace, Defence and Marine |
Manufacturing |
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| Related Grants: |
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| Panel History: |
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Summary on Grant Application Form |
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This programme is focused on two areas of the properties of TiAl-based alloys; the factors controlling the ductility of high Nb TiAl alloys and the influence of pre-stressing on the fatigue life of these alloys.The first part of the work will be aimed at understanding the factors which influence the ductility of cast ingots which have a lamellar structure. The investigation will focus on the origin of the reproductibility of the good ductility exhibited by lamellar heat treated forged samples (in contrast to the lower ductility of the lamellar cast samples) and the scatter shown by samples with a duplex structure. This work will require detailed observations using stereo-acoustic emission to locate the origin of the source of failure and to correlate this with direct observations of the local microstructure. In situ tensile straining in a FEG SEM will also be used to observe the early stages of failure.The second part is aimed at assessing the extent of and the significance of the role and pre and post-yield interlamellar cracking on the fatigue life of samples. This work will require acoustic emission and internal friction measurements made during pre-stressing to be correlated with the fatigue performance of these samples which have been stressed and samples which have not been pre-stressed. Detailed microstructural work will be needed, post-fatigue testing, to understand these observations.
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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.bham.ac.uk |