Oh, S. H.; Legros, M.; Kiener, D.; Dehm, G.: In situ observation of dislocation nucleation and escape in a submicrometre aluminium single crystal. Nature Materials 8 (2), pp. 95 - 100 (2009)
Oh, S. H.; Legros, M.; Kiener, D.; Gruber, P. A.; Dehm, G.: In situ TEM straining of single crystal Au films on polyimide: Change of deformation mechanisms at the nanoscale. Acta Materialia 55 (16), pp. 5558 - 5571 (2007)
Legros, M.; Dehm, G.; Keller-Flaig, R.-M.; Arzt, E.; Hemker, K. J.; Süresh, S.: Dynamic observation of Al thin films plastically strained in a TEM. Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing 309-310, pp. 463 - 467 (2001)
Dehm, G.; Legros, M.; Kiener, D.: In-situ TEM Straining Experiments: Recent Progress in Stages and Small-Scale Mechanics. In: In-situ Electron Microscopy: SEM and TEM Applications in Physics, Chemistry and Materials Science, pp. 227 - 254 (Ed. Dehm, G.). Wiley VCH Verlag, Weinheim, Germany (2012)
Oh, S. H.; Legros, M.; Kiener, D.; Gruber, P. A.; Dehm, G.: Size-Induced Transition from Perfect to Partial Dislocation Plasticity in Single Crystal Au Films on Polyimide. In: Proceeding Microscopy 33rd Conference, Deutsche Gesellschaft für Elektronenmikroskopie, pp. 278 - 279. Microscopy 33rd Conference, Deutsche Gesellschaft für Elektronenmikroskopie, Saarbrücken, Germany, September 02, 2007 - September 07, 2007. (2007)
Dehm, G.; Legros, M.; Heiland, B.: In-situ TEM straining experiments of Al films on polyimide using a novel FIB design for specimen preparation. 10th Meeting on Frontiers of Electron Microscopy in Materials Science, Maastricht, The Netherlands, September 25, 2005 - September 30, 2005. Journal of Materials Science 41 (14), pp. 4484 - 4489 (2006)
Oh, S. H.; Kiener, D.; Legros, M.; Gruber, P. A.; Arzt, E.; Dehm, G.: In-situ TEM tensile testing of thin Au films: A transition in deformation mechanism. Meeting at Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, Austria., (2006)
Legros, M.; Dehm, G.; Balk, T. J.: In-Situ TEM Study of Plastic Stress Relaxation Mechanisms and Interface Effects in Metallic Films. In: MRS Proceedings, Vol. 875. 2005 MRS Spring Meeting. (2005)
Legros, M.; Dehm, G.; Balk, T. J.; Arzt, E.; Bostrom, J. R. O.; Gergaud, P.; Thomas, O.; Kaouache, B.: Plasticity - related phenomena in metallic films on substrates. In: Materials Research Society Symposium - Proceedings, Vol. 779, pp. 63 - 74. Materials Research Society Symposium W – Multiscale Phenomena in Materials - Experiments and Modeling Related to Mechanical Behavior, San Francisco, CA, USA, April 22, 2003 - April 24, 2003. (2003)
Hydrogen in aluminium can cause embrittlement and critical failure. However, the behaviour of hydrogen in aluminium was not yet understood. Scientists at the Max-Planck-Institut für Eisenforschung were able to locate hydrogen inside aluminium’s microstructure and designed strategies to trap the hydrogen atoms inside the microstructure. This can…
This project aims to investigate the influence of grain boundaries on mechanical behavior at ultra-high strain rates and low temperatures. For this micropillar compressions on copper bi-crystals containing different grain boundaries will be performed.
Oxidation and corrosion of noble metals is a fundamental problem of crucial importance in the advancement of the long-term renewable energy concept strategy. In our group we use state-of-the-art electrochemical scanning flow cell (SFC) coupled with inductively coupled plasma mass spectrometer (ICP-MS) setup to address the problem.
For understanding the underlying hydrogen embrittlement mechanism in transformation-induced plasticity steels, the process of damage evolution in a model austenite/martensite dual-phase microstructure following hydrogenation was investigated through multi-scale electron channelling contrast imaging and in situ optical microscopy.
We plan to investigate the rate-dependent tensile properties of 2D materials such as metal thin films and PbMoO4 (PMO) films by using a combination of a novel plan-view FIB based sample lift out method and a MEMS based in situ tensile testing platform inside a TEM.
Hydrogen induced embrittlement of metals is one of the long standing unresolved problems in Materials Science. A hierarchical multiscale approach is used to investigate the underlying atomistic mechanisms.
Hydrogen embrittlement affects high-strength ferrite/martensite dual-phase (DP) steels. The associated micromechanisms which lead to failure have not been fully clarified yet. Here we present a quantitative micromechanical analysis of the microstructural damage phenomena in a model DP steel in the presence of hydrogen.
We will investigate the electrothermomechanical response of individual metallic nanowires as a function of microstructural interfaces from the growth processes. This will be accomplished using in situ SEM 4-point probe-based electrical resistivity measurements and 2-point probe-based impedance measurements, as a function of mechanical strain and…
The project aims to study corrosion, a detrimental process with an enormous impact on global economy, by combining denstiy-functional theory calculations with thermodynamic concepts.