Multiscale modeling of deformation twinning in Mg alloys PhD
- Mechanical, Electrical and Manufacturing Engineering
- Entry requirements:
- 3 years
- 6 years
- Reference number:
- Start date:
- 01 October 2018
- UK/EU fees:
- International fees:
- Application deadline:
- 09 March 2018
in the UK for research quality
in the UK for Mechanical Engineering
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The low density, specific strength, stiffness, castability, machinability, weldability and damping, as well as corrosion of magnesium (Mg) alloys, have resulted in a renaissance of Mg research. The main hurdle in using wrought Mg alloys, for instance in the automotive industry, is their limited room temperature formability compared to aluminum. Magnesium alloys experience poor ductility leading to premature fracture in forming operations, attributed to the relatively small number of deformation modes (compared to e.g. aluminum alloys) that hexagonal close packed (hcp) materials typically exhibit. It is now widely accepted that the deformation twinning serves as an alternative mechanism to accommodate plastic flow.
The emphasis on this project is in capturing twin nucleation and growth as well as detwinning during monotonic and low cycle fatigue loading using state-of-the art computational models. The specific computational tools that will be used in this effort comprise atomistic models of Mg, and crystal plasticity models implemented in a finite element scheme. The atomistic models will be used to study twin thickening and detwinning in pure magnesium. The information obtained will be used in crystal plasticity simulations that account for twin activity locally resolved within grains. The application of this method will focus on single crystals and oligocrystals (crystals with a few grains) to allow for validation of the models against experimental data.
Primary supervisor: Konstantinos Baxevanakis
Find out more
To find out more about the School of Mechanical, Electrical and Manufacturing Engineering, please visit our website.
- K.P. Baxevanakis, C. Mo, M. Cabal and A. Kontsos, 2017. An integrated approach to model strain localization bands in magnesium alloys, Computational Mechanics (Online), http://dx.doi.org/10.1007/s00466-017-1480-6.
Applicants should have, or expect to achieve, at least a 2:1 Honours degree (or equivalent) in Mechanical Engineering, Materials Science, Applied Mathematics or a related subject.
A relevant Master’s degree and/or experience in one or more of the following will be an advantage: Mechanical Engineering, Computational Solid Mechanics, Materials Science.
All students must also meet the minimum English Language requirements.
Fees and funding
Tuition fees cover the cost of your teaching, assessment and operating University facilities such as the library, IT equipment and other support services. University fees and charges can be paid in advance and there are several methods of payment, including online payments and payment by instalment. Special arrangements are made for payments by part-time students.
This is an open call for candidates who are sponsored or who have their own funding. If you do not have funding, you may still apply, however Institutional funding is not guaranteed. Outstanding candidates (UK/EU/International) without funding will be considered for funding opportunities which may become available in the School.
How to apply
All applications should be made online. Under programme name select Mechanical and Manufacturing Engineering. Please quote reference number: KB1UF2018