Job description: Apart from the movement of complete dislocations, processes like the sliding of partial dislocations with the formation of stacking defects and the slip of grain boundaries, and grain rotation contribute to the plastic deformation of nanocrystalline alloys. Due to mechanical loading, the microstructure changes in terms of e.g. dislocation and stacking defect density.
The dissertation shall be aimed at identifying deformation mechanisms in nanocrystalline metals by synchrotron X-radiation. For this purpose, in-situ experiments shall be carried out. By using in-situ diffraction methods in a synchrotron beamline, the occurrence of defects during deformation shall be determined quantitatively and, thus, the contribution of different mechanisms to plastic deformation shall be characterized.
For this purpose, the problem of X-ray scattering at these alloys shall be modeled theoretically and the evaluation methods shall be optimized and validated.
Cooperation:
Universität Karlsruhe (TH); ESRF Grenoble; Universität Würzburg.
In line with the university’s policy of equal opportunities, applications from qualified women are particularly encouraged. Handicapped applicants will be preferred in case of the same qualification.
Qualification:
Completed university studies in physics, crystallography or a closely related subject with very good success;
Vivid interest in X-ray physics, solid-state physics and chemistry, and materials research;
Practical experience in programming languages (ideally C++ or IDL) and computing under Linux/UNIX;
Proficiency and communication skills in the English language.
Salary: Remuneration shall be based on the Tarifvertrag für den Öffentlichen Dienst (Collective Agreement for the Public Service Sector). Institute/Departmen t: Institut für Synchrotonstrahlung (ISS) Contract duration: limited 3 years Starting date: as soon as possible Application up to: 13.08.2007 Contact person in line-management: Mr. Prof. Dr. Tilo Baumbach, phone: +49 (0)7247 82 6820, E-mail: tilo.baumbach@ iss.fzk.de Application: Please send your application referring to the identificationnumbe r of the job. ISS05-07 to Mrs. Reinhard, HPS, Telephone 07247 82-5079.
Research center, 13.02.2007
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