| EPSRC Reference: |
GR/H87766/01 |
| Title: |
MICROSTRUCTURES AND FATIGUE CHARACTERISTICS OF HIGH-STRENGTH SPRING STEELS |
| Principal Investigator: |
Strangwood, Dr M |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Metallurgy and Materials |
| Organisation: |
University of Birmingham |
| Scheme: |
LINK |
| Starts: |
14 January 1994 |
Ends: |
13 July 1997 |
Value (£): |
127,317
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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| EPSRC Industrial Sector Classifications: |
| Manufacturing |
Transport Systems and Vehicles |
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| Panel History: |
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Summary on Grant Application Form |
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The effects of process variables upon the microstructure and mechanical properties of coil springs will be investigated in order to develop steels with a UTS approaching 1850MPa, whilst retaining adequate fatigue properties. Microstructural characterisation and quantification of strain/temperature effects on solid state transformations through all stages of the processing of the springs will be carried out on both the currently used steel and an alternative. This will identify the processing window for improved strength. Allied to this the initiation and growth of short cracks will be assessed to identify microstructural initiation sites and the effects of residual stress fields upon fatigue growth in the short crack regime. These will be investigated at different stress levels and closure effects will be quantified. Modelling of short crack fatigue behaviour will then be used as a link from microstructure to the macroscopic aspects of fatigue behaviour. These will include property evaluation in terms of S/N curves, Bauschinger effects and hyteresis leading to a logical lifing philosophy for current and improved springs.
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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 |