In the ‘Micro- and Nanomechanics’ group of Assoz.Prof. Dr. Daniel Kiener the ERC Consolidator Grant TOUGHIT focusses on the development of superior strong and tough composite materials by tailoring microstructure and interface properties. In this regard, they are looking for:

- Postdoctoral: "In-situ TEM analysis of crack tip processes"

The candidate will apply quantitative in-situ transmission electron microscopy to analyze the fundamental processes taking place during nucleation and propagation of cracks in metallic nanocomposites.

For futher information: « Post doc job opening 1.pdf »

- Postdoctoral: "Local strain fields near crack tips"

The candidate will apply strain mapping techniques in the transmission electron microscope to analyze the local strain fields around cracks in inhomogeneous metallic materials.

For futher information: « Post doc job opening 2.pdf »

From September 26^th to 28^th 2018, Europe´s Material Scientists and Engineers will meet at the Materials Science and Engineering Congress (MSE) at the Darmstadt University of Technology, Germany. And a special focus on the following symposia:

C05 - Small scall in situ mechanical testing:

 Small scale and in situ mechanical testing techniques are becoming more and more important for characterizing and understanding the mechanical behavior of a wide variety of materials. There is a rapid development of innovative in situ and small scale testing techniques, which allow further insights in the acting deformation processes and dominating deformation mechanisms.

This symposium will mainly focus on both the development of new advanced in situ testing techniques and the further application of these techniques to understand the mechanical behavior of materials. Of special interest are combined experimental and simulation approaches, specifically focusing on the influences of interfaces on the material behavior. Topics of interest include but are not limited to:

• Advanced small scale testing techniques (e.g. Nanoindentation, µ-compression, µ-tension testing).
• Testing and understanding the deformation behavior of interfaces: Interface glide and migration in deformation of interface-dominated structures, i.e. grain and phase boundaries.
• Coupling between deformation and interface chemistry.
• Monotonic and cyclic testing; interrupted monitoring.
• Testing at elevated temperatures and under various environmental conditions.
• New testing approaches for fracture toughness determination.
• Correlation high resolution microscopy analysis and in situ testing using optical microscopy, SEM, TEM or X-ray.
• Evaluation of localized phenomena by use of digital image correlation, acoustic and thermal measurements or combined full-field measurements.
• Correlation between experiments and simulations.

Symposium Organizers:

Karsten Durst, Physical Metallurgy, TU Darmstadt.

Verena Maier-Kiener, Department Physical Metallurgy and Materials Testing, Montanuniversität Leoben.

Rebecca Janisch, ICAMS; Ruhr University Bochum.

Afrooz Barnoush, NTNU, Norwegian University of Science and Technology.

Confirmed keynote speaker:

Dr. Steffen Brinckmann from MPIE.

Dr. Marco Sebastiani from University Roma Tre.

Abstract deadline: February 28th, 2018

Further information on the abstract submission can be found under https://www.mse-congress.de/topics/c-characterization/

The department of Mechanical and Industrial Engineering is looking for postdoctoral researcher and a PhD student:

Postdoctoral:

"Environmentally assisted cracking of advancd high strength alloys (SO IV-21/18)" , Application deadline is 7 March 2018.

Please find further information on the subject and application here.

PhD:

"Environmentally Assisted Cracking of Additive Manufactured Corrosion Resistant Alloys (IV-79/18)", Application deadline is February 28th, 2018.

Please find further information on the subject and application here.

Thesis: Grain-Boundary based deformation mechanisms in ultra-fine grain metals.

This thesis, essentially experimental, consists in deforming several small-grain fcc metals (Cu, Ni, Al) in situ in a dedicated and unique in the world AFM / STM (PPrime Institute, Poiters) and in transmission electron microscopy (TEM)) (CEMES-CNRS, Toulouse). TEM is one of the few techniques capable of imaging grain boundaries in the thickness of the metal (thin slice of a few hundred nm) with nanoscale precision. In situ AFM / STM will complement these observations by revealing, at the atomic scale, the displacements perpendicular to the surface. The combination of the two experiments will provide complete information on the mechanism of shear/migration of grain boundaries under stress. Crystal orientation mappings (TEM or SEM) should be used to characterize the type of migration depending on the type of grain boundary.

This thesis, funded as part of the RODIN project (Role of disconnections in grain boundary-based plasticity – French ANR Agency) can begin between March 2018 and October 2019. The schedule of experiments between Poitiers and Toulouse is flexible, but should be on the order of 50-50 of the 3 years contract. The applicant will have a solid background in materials science and crystallography. Applications should be sent to christophe.coupeau@univ-poitiers.fr and/or marc.legros@cemes.fr 

 For futher information on the subject, see document attached below:

Thesis: In situ TEM study of elementary plasticity mechanisms. 

Project: MuDiLingo, a EU-ERC project awarded to S. Sandfeld, (U. Freiberg, Germany) is approaching the plasticity problems in a totally new way, digging experimental data from dynamic experiments and turning them into time-resolved strain or energy fields.

In the frame of this project, this thesis will focus on observing elementary mechanisms of the plasticity in High Entropy Alloys (HEA) and twinned Copper, with the objective of gaining quantitative information on the way they unfold. The choice of these two materials are dictated by the puzzling resistance to deformation of face centered cubic (fcc) HEA, and by the still poorly known understanding of dislocations/grain boundaries (GB) interaction.

Within the 3-years contract, the successful applicant will acquire the necessary knowledge to perform in-situ TEM experiment in a world-class laboratory in this field (CEMES-CNRS, Toulouse). Statistical data on the above mentioned mechanisms will serve to build a database of events, classifying those from the least to the most probable and fuelling data analysis that will be performed in Freiberg.

Applications should be sent to marc.legros@cemes.fr. Solid basis in materials science and a good knowledge of crystallography are required. The position is opened immediately.

For futher information, see document attached below: