Hickel, T.; Grabowski, B.; Ismer, L.; Neugebauer, J.: Role of Atomistic Simulations in the Prediction of Thermodynamic Properties of Materials. Workshop on Multi-Scale Computational Materials Design of Structural Materials, POSCO international center, Pohang, South Korea (2009)
Nazarov, R.; Ismer, L.; Hickel, T.; Neugebauer, J.: Wasserstoff in X-IP Stahl (ab initio) Einfluss von Defekten auf die Energetik und Dynamik von Wasserstoff in Manganstählen. X-IP Workshop, Dortmund, Germany (2009)
Aydin, U.; Ismer, L.; Hickel, T.; Neugebauer, J.: Universal trends for the solubility of hydrogen in non-magnetic 3d transition metals derived from first principles. DPG Spring meeting, Dresden, Germany (2009)
Ismer, L.; Hickel, T.; Neugebauer, J.: Effect of interstitial carbon on the magnetic structure of fcc iron: Towards an ab-initio understanding of austenitic steels. DPG Spring Meeting 2009, Dresden, Germany (2009)
Todorova, M.; Ismer, L.; Neugebauer, J.: Role of anharmonic contributions for the elasticity of ice. Fruehjahrstagung der Deutschen Physikalischen Gesellschaft, Dresden, Germany (2009)
Todorova, M.; Ismer, L.; Neugebauer, J.: Role of anharmonic contributions for the elasticity of ice. March meeting of the American Physical Society (APS), Pittsburg, USA (2009)
Aydin, U.; Ismer, L.; Hickel, T.: Ab initio study of trends in the thermodynamic and kinetic properties of H in 3d transition metals. Computational Materials Science Workshop, Ebernburg Castle, Germany (2008)
Ismer, L.; Ireta, J.; Neugebauer, J.: First principles study of vibrational and thermodynamic properties of the secondary structure of proteins. Computational Materials Science Workshop, Ebernburg Castle, Germany (2008)
Grabowski, B.; Ismer, L.; Hickel, T.; Neugebauer, J.: Ab initio up to the melting point: An efficient thermodynamic integration scheme. Computational Materials Science Workshop, Ebernburg Castle, Germany (2008)
Friák, M.; Sob, M.; Kim, O.; Ismer, L.; Neugebauer, J.: Ab initio study of the alpha-iron stability limits. Ab initio Description of Iron and Steel: Magnetism and Phase diagrams (ADIS 2008), Ringberg castle, Tegernsee, Germany (2008)
Grabowski, B.; Ismer, L.; Hickel, T.; Neugebauer, J.: Ab initio up to the melting point: Influence of vacancies and explicit anharmonicity. International Workshop on Ab initio Description of Iron and Steel (ADIS2008), Ringberg Castle, Germany (2008)
Ismer, L.; Friák, M.; Hickel, T.; Neugebauer, J.: Effect of interstitial carbon on the magnetic structure of fcc iron: Towards an ab-initio simulation of austenitic steels. International Workshop on Ab initio Description of Iron and Steel (ADIS2008), Ringberg Castle, Germany (2008)
Grabowski, B.; Ismer, L.; Hickel, T.; Neugebauer, J.: Ab initio up to the melting point: Influence of vacancies and explicit anharmonicity. Spring meeting of the German Physical Society (DPG), Berlin, Germany (2008)
Ismer, L.; Ireta, J.; Neugebauer, J.: Why are pi-helices so seldomly observed in proteins. Spring meeting of the German Physical Society (DPG), Regensburg, Germany (2007)
Ismer, L.; Ireta, J.; Neugebauer, J.: Vibrational modes and thermodynamic properties of the secondary structure of proteins. 1. Harzer Ab initio Workshop, Clausthal (2006)
Ismer, L.; Ireta, J.; Neugebauer, J.: On the balance of enthaplic and entropic contributions to the stability of the helix. Spring Meeting of the Division Condensed Matter, Dresden, Germany (2006)
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…
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…
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.
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.
This project will aim at developing MEMS based nanoforce sensors with capacitive sensing capabilities. The nanoforce sensors will be further incorporated with in situ SEM and TEM small scale testing systems, for allowing simultaneous visualization of the deformation process during mechanical tests
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.
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.
Thermo-chemo-mechanical interactions due to thermally activated and/or mechanically induced processes govern the constitutive behaviour of metallic alloys during production and in service. Understanding these mechanisms and their influence on the material behaviour is of very high relevance for designing new alloys and corresponding…
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…