| EPSRC Reference: |
GR/J92774/01 |
| Title: |
CRYSTALLOGRAPHIC THEORY OF INTERFACE STRUCTURE APPLIED TO PHASE TRANSFORMATIONS |
| Principal Investigator: |
Pond, Professor R |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Materials Science & Eng |
| Organisation: |
University of Liverpool |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
18 March 1994 |
Ends: |
17 March 1996 |
Value (£): |
7,578
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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Summary on Grant Application Form |
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The applicant has recently developed a generalised theory of the topological character of defects in crystals, on crystal surfaces and at interfaces. This theory takes into account the full spacegroup symmetry of the crystals involved (rather than merely the translation symmetry as in previous treatments), and has led to the prediction of several new types of defects which have now been experimentally confirmed. In addition, a rigorous technique (graphical and mathematical) of circuit mapping for the characterisation of defects, both isolated ones and defects in arrays as are used to model interfaces, has been developed.The proposed work is to reformulate and reassess existing models of the role of interfacial structure and defects in phase transformations using the new methods. For example, the phenomenological theory of martensite crystallography will be reconsidered, taking into account the possibility of defects which do not arise as a consequence of the translation symmetry of the adjacent crystals. The predictions of the modified theory will be compared with previous predictions and experimental observations. In addition, other theories, such as the structural ledge model and invariant line model will be reassessed, and, it is hoped, conflicting predictions and controversies resolved.
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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.liv.ac.uk |