Overview
Ph.D. Research Studentship (Rolls-Royce/EPSRC)
Thermal Stability of Superbainitic Steel
University of Cambridge - Department of Materials Science and Metallurgy
Supervisor: Professor Harry Bhadeshia
Funded at the 'home rate' fees level, for students who meet the EPSRC residency criteria
'Superbainite' is a recent discovery in which the world's first bulk nanostructured metal is made by phase transformation at temperatures where diffusion is inconceivable. The result is a microstructure in which slender plates of bainitic ferrite, just 20-40 nm in thickness, are uniformly dispersed within a matrix of carbon-enriched austenite. The properties are impressive, with the strength routinely in the range 2000-2500 MPa. This gives the structure the ability to work-harden, a feature missing in nanostructures produced by other methods. Work hardening is important in order to avoid plastic instabilities.
The purpose of this project is to redesign these alloys for use at temperatures in exces of 400°C. For this to be achieved, it will be necessary to prevent the retained austenite from decomposing into an equilibrium mixture of cementite and ferrite. This might be done by altering certain thermodynamic parameters.
The T0 curve represents the locus of all carbon concentrations on a phase diagram where austenite and ferrite of the same chemical composition have identical free energies. It determines the carbon concentration of the austenite at the point where bainite ceases to form. If this carbon concentration can be kept less than the solubility of cementite in austenite then the latter becomes stable to thermal decomposition.
These concepts will be investigated with the aim of creating a novel alloy system which will then be assessed experimentally from the point of view of performance and stability for prolonged periods at elevated temperatures.
Eligible candidates
Applicants should as a minimum have (or expect to be awarded) an upper second class UK Master's level degree (MSci, MPhys, MChem, MEng etc., or overseas equivalents) in a relevant subject. Students should meet the EPSRC residency criteria to be eligible for this studentship.
Amount awarded
The stipend will be approximately £13,290 per annum and an additional £5000 per annum from our industrial partner.
Enquiries ?
For further technical information contact Professor Harry Bhadeshia (hkdb@cam.ac.uk). Application packs are available via http://www.admin.cam.ac.uk/univ/gsprospectus/applying/ or from Dr Rosie Ward (remw2@cam.ac.uk) who is happy to answer questions about the admissions process.
Please kindly mention Scholarization.blogspot.com when applying for this opportunity
Ph.D. Research Studentship (Rolls-Royce/EPSRC)
Thermal Stability of Superbainitic Steel
University of Cambridge - Department of Materials Science and Metallurgy
Supervisor: Professor Harry Bhadeshia
Funded at the 'home rate' fees level, for students who meet the EPSRC residency criteria
'Superbainite' is a recent discovery in which the world's first bulk nanostructured metal is made by phase transformation at temperatures where diffusion is inconceivable. The result is a microstructure in which slender plates of bainitic ferrite, just 20-40 nm in thickness, are uniformly dispersed within a matrix of carbon-enriched austenite. The properties are impressive, with the strength routinely in the range 2000-2500 MPa. This gives the structure the ability to work-harden, a feature missing in nanostructures produced by other methods. Work hardening is important in order to avoid plastic instabilities.
The purpose of this project is to redesign these alloys for use at temperatures in exces of 400°C. For this to be achieved, it will be necessary to prevent the retained austenite from decomposing into an equilibrium mixture of cementite and ferrite. This might be done by altering certain thermodynamic parameters.
The T0 curve represents the locus of all carbon concentrations on a phase diagram where austenite and ferrite of the same chemical composition have identical free energies. It determines the carbon concentration of the austenite at the point where bainite ceases to form. If this carbon concentration can be kept less than the solubility of cementite in austenite then the latter becomes stable to thermal decomposition.
These concepts will be investigated with the aim of creating a novel alloy system which will then be assessed experimentally from the point of view of performance and stability for prolonged periods at elevated temperatures.
Eligible candidates
Applicants should as a minimum have (or expect to be awarded) an upper second class UK Master's level degree (MSci, MPhys, MChem, MEng etc., or overseas equivalents) in a relevant subject. Students should meet the EPSRC residency criteria to be eligible for this studentship.
Amount awarded
The stipend will be approximately £13,290 per annum and an additional £5000 per annum from our industrial partner.
Enquiries ?
For further technical information contact Professor Harry Bhadeshia (hkdb@cam.ac.uk). Application packs are available via http://www.admin.cam.ac.uk/univ/gsprospectus/applying/ or from Dr Rosie Ward (remw2@cam.ac.uk) who is happy to answer questions about the admissions process.
Please kindly mention Scholarization.blogspot.com when applying for this opportunity
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