Kirchlechner, C.; Kečkéš, J.; Micha, J.-S.; Dehm, G.: In Situ μLaue: Instrumental Setup for the Deformation of Micron Sized Samples. In: Neutrons and Synchrotron Radiation in Engineering Materials Science: From Fundamentals to Applications: Second Edition, pp. 425 - 438 (Eds. Staron, P.; Schreyer, A.; Clemens, H.; Mayer, S.). wiley, Hoboken, NJ, USA (2017)
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)
Dehm, G.: Das Erich-Schmid-Institut für Materialwissenschaft (ESI) der Österreichischen Akademie der Wissenschaften. In: Handbuch der Nanoanalytik Steiermark, NanoNet Styria, 1 Ed., pp. 1 - 311 (Ed. Rom , W.). W. Rom, Graz, Austria (2005)
Dehm, G.; Müllner, P.: TEM-Observation of Dislocations in Polycrystalline Metal Films. In: The Encyclopedia of Materials: Science and Technology, Vol. 1, pp. 2329 - 2331 (Eds. Buschow, .H.J.; Cahn, R.; Flemings, M.; Ilschner, .; Kramer, E. et al.) (2001)
Microstructure of Ni2B Laser-Induced Surface-Alloyed α-Fe (Materials Resaerch Symposium Proceedings, Phase Transformations and Systems Driven far from Equilibrium, 481). MRS Fall Meeting´97, Boston, MA, USA. (2001)
Bieler, S.; Kang, S. G.; Heußen, D.; Ramachandramoorthy, R.; Dehm, G.; Weinberg, K.: Investigation of copper lattice structures using a Split Hopkinson Pressure Bar. Proceedings of Applied Mathematics and Mechanics, Special Issue: 92nd Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM) 21 (1), e202100155, (2021)
Rehman, U.; Tian, C.; Stein, F.; Best, J. P.; Dehm, G.: Fracture Toughness of the Intermetallic C15 Al2Ca Laves Phase Determined using a Micropillar Splitting Technique. In: Intermetallics 2021, pp. 155 - 156. Intermetallics 2021, Kloster Banz, Bad Staffelstein, Germany, October 04, 2021 - October 08, 2021. (2021)
Luo, W.; Kirchlechner, C.; Dehm, G.; Stein, F.: Micromechanics of Co–Nb Laves Phases: Strength, Fracture Toughness, and Hadrness as Function of Composition and Crystal Structure. In: Joint EPRI – 123HIMAT International Conference on Advances in High-Temperature Materials, 2019, pp. 11 - 21 (Eds. Shingledecker, J.; Takeyama, M.). EPRI's 9th International Conf on Advances in Materials Technology for Fossil Power Plants and the 2nd International 123HiMAT Conf on High-Temperature Materials, Nagasaki, Japan, October 21, 2019 - October 24, 2019. (2019)
Luo, W.; Kirchlechner, C.; Dehm, G.; Stein, F.: Deformation of Micropillars of Cubic and Hexagonal NbCo2 Laves Phases under Uniaxial Compression at Room Temperature. In: Proc. Intermetallics 2017, pp. 199 - 200 (Eds. Heilmaier, M.; Krüger, M.; Mayer, S.; Palm, M.; Stein, F.). Intermetallics 2017, Educational Center Kloster Banz, Bad Staffelstein, Germany, October 02, 2017 - October 06, 2017. Conventus Congressmanagement & Marketing GmbH, Jena, Germany (2017)
Hieke, S. W.; Willinger, M. G.; Wang, Z.-J.; Richter, G.; Dehm, G.; Scheu, C.: In situ electron microscopy – insights in solid state dewetting of epitaxial Al thin films on sapphire. In: Microscopy Conference 2017 (MC 2017) - Proceedings (Ed. Laue, M.). Microscopy Conference 2017 (MC 2017), Lausanne, Switzerland, August 21, 2017 - August 25, 2017. Universität Regensburg, Regensburg (2017)
Hieke, S. W.; Dehm, G.; Scheu, C.: Investigation of solid state dewetting phenomena of epitaxial Al thin films on sapphire using electron microscopy. In: European Microscopy Congress 2016: Proceedings, pp. 203 - 204. The 16th European Microscopy Congress (EMC 2016), Lyon, France, August 28, 2016 - September 02, 2016. Wiley-VCH Verlag GmbH & Co KGaA (2016)
Heinz, W.; Dehm, G.: Grain resolved orientation changes and texture evolution in a thermally strained Al film on Si substrate. The 38th International Conference on Metallurgical Coatings and Thin Films (ICMCTF 2011), San Diego, CA, USA, May 02, 2011 - May 06, 2011. Surface and Coatings Technology, Part of special issue: Proceedings of the 38th International Conference on Metallurgical Coatings and Thin Films (ICMCTF), ICMCTF 2011 206 (7), pp. 1511 - 2034 (2011)
In this project, we aim to design novel NiCoCr-based medium entropy alloys (MEAs) and further enhance their mechanical properties by tuning the multiscale heterogeneous composite structures. This is being achieved by alloying of varying elements in the NiCoCr matrix and appropriate thermal-mechanical processing.
The exploration of high dimensional composition alloy spaces, where five or more alloying elements are added at near equal concentration, triggered the development of so-called high entropy (HEAs) or compositionally complex alloys (CCAs). This new design approach opened vast phase and composition spaces for the design of new materials with advanced…
This project studies the mechanical properties and microstructural evolution of a transformation-induced plasticity (TRIP)-assisted interstitial high-entropy alloy (iHEA) with a nominal composition of Fe49.5Mn30Co10Cr10C0.5 (at. %) at cryogenic temperature (77 K). We aim to understand the hardening behavior of the iHEA at 77 K, and hence guide the future design of advanced HEA for cryogenic applications.
Interstitial alloying in high-entropy alloys (HEAs) is an important strategy for tuning and improving their mechanical properties. Strength can be increased due to interstitial solid-solution hardening, while interstitial alloying can simultaneously affect, e.g., stacking fault energies (SFEs) and thus trigger different deformation mechanisms…
To advance the understanding of how degradation proceeds, we use the latest developments in cryo-atom probe tomography, supported by transmission-electron microscopy. The results showcase how advances in microscopy & microanalysis help bring novel insights into the ever-evolving microstructures of active materials to support the design of better…
In this project, we aim at significantly enhancing the strength-ductility combination of quinary high-entropy alloys (HEAs) with five principal elements by simultaneously introducing interstitial C/N and the transformation induced plasticity (TRIP) effect. Thus, a new class of alloys, namely, interstitially alloyed TRIP-assisted quinary (five-component) HEAs is being developed.
The Magnetic Moment Tensor Potentials (mMTPs) are a class of machine-learning interatomic potentials, which could accurately reproduce both vibrational and magnetic degrees of freedom as provided, e.g., from first-principles calculations [1]. Application to prototypical bcc iron has demonstrated that these potentials are capable to quantitatively…
The worldwide developments of electric vehicles, as well as large-scale or grid-scale energy storage to compensate the intermittent nature of renewable energy generation has generated a surge of interest in battery technology. Understanding the factors controlling battery capacity and, critically, their degradation mechanisms to ensure long-term…