Patil, P.; Lee, S.; Dehm, G.; Brinckmann, S.: Influence of crystal orientation on twinning in austenitic stainless-steel during single micro-asperity tribology and nanoindentation. WEAR 504-505, 204403 (2022)
Utt, D.; Lee, S.; Stukowski, A.; Oh, S. H.; Dehm, G.; Albe, C.: Jerky motion of dislocations in high-entropy alloys: The linkage between local Peierls stress fluctuations and dislocation mobility. Condensed Matter: Materials Science, pp. 1 - 13 (2020)
Lee, S.; Duarte, M. J.; Soler, R.; Kirchlechner, C.; Liebscher, C.; Oh, S. H.; Dehm, G.: In-situ TEM Study of Dislocation Plasticity of a Single Crystal FeCoCrMnNi HEA. IAMNano 2018, The International Workshop on Advanced and In-situ Microscopies of Functional Nanomaterials and Devices, Hamburg, Germany (2018)
Lee, S.; Liebscher, C.; Dehm, G.: In-situ TEM study on deformation behaviors of CrMnFeCoNi single crystal high entropy alloys. European Solid Mechanics Conference (ESMC) , Bologna, Italy (2018)
Lee, S.; Duarte, M. J.; Liebscher, C.; Oh, S. H.; Dehm, G.: Dislocation Plasticity in Single Crystal FeCrCoMnNi HEA by in-situ TEM Deformation. Schöntal Symposium - Dislocation based plasticity, Schöntal, Germany (2018)
The aim of this project is to correlate the point defect structure of Fe1-xO to its mechanical, electrical and catalytic properties. Systematic stoichiometric variation of magnetron-sputtered Fe1-xO thin films are investigated regarding structural analysis by transition electron microscopy (TEM) and spectroscopy methods, which can reveal the defect…
Nickel-based alloys are a particularly interesting class of materials due to their specific properties such as high-temperature strength, low-temperature ductility and toughness, oxidation resistance, hot-corrosion resistance, and weldability, becoming potential candidates for high-performance components that require corrosion resistance and good…
In this project, we aim to enhance the mechanical properties of an equiatomic CoCrNi medium-entropy alloy (MEA) by interstitial alloying. Carbon and nitrogen with varying contents have been added into the face-centred cubic structured CoCrNi MEA.
Femtosecond laser pulse sequences offer a way to explore the ultrafast dynamics of charge density waves. Designing specific pulse sequences may allow us to guide the system's trajectory through the potential energy surface and achieve precise control over processes at surfaces.
The aim of this project is to develop novel nanostructured Fe-Co-Ti-X (X = Si, Ge, Sn) compositionally complex alloys (CCAs) with adjustable magnetic properties by tailoring microstructure and phase constituents through compositional and process tuning. The key aspect of this work is to build a fundamental understanding of the correlation between…
In this project, we aim to achieve an atomic scale understanding about the structure and phase transformation process in the dual-phase high-entropy alloys (HEAs) with transformation induced plasticity (TRIP) effect. Aberration-corrected scanning transmission electron microscopy (TEM) techniques are being applied ...
In this project, links are being established between local chemical variation and the mechanical response of laser-processed metallic alloys and advanced materials.