Du, Y. J. A.; Ismer, L.; Rogal, J.; Hickel, T.; Neugebauer, J.; Drautz, R.: First-principles study on the interaction of H interstitials with grain boundaries in alpha- and gamma-Fe. Physical Review B 84 (14), pp. 144121-1 - 144121-13 (2011)
Ismer, L.; Ireta, J.; Neugebauer, J.: A density functional theory based estimation of the anharmonic contributions to the free energy of a polypeptide helix. Journal of Chemical Physics 135 (8), pp. 084122-1 - 084122-7 (2011)
Ismer, L.; Ireta, J.; Neugebauer, J.: First principles free energy analysis of helix stability: The origin of the low entropy in pi-helices. Journal of Physical Chemistry B 112, pp. 4109 - 4112 (2008)
Grabowski, B.; Ismer, L.; Hickel, T.; Neugebauer, J.: Ab initio concepts for an efficient and accurate determination of thermodynamic properties up to the melting point. Calphad XXXIX, Jeju Island, South Korea (2010)
Aydin, U.; Ismer, L.; Hickel, T.; Neugebauer, J.: Chemical trends of the solution enthalpy of hydrogen in 3d transition metals in dilute limit, derived from first principles. DPG Frühjahrstagung 2010, Regensburg, Germany (2010)
Grabowski, B.; Ismer, L.; Hickel, T.; Neugebauer, J.: Computing Ab Initio Free Energy Contributions of Point Defects. 139th Annual Meeting of the Minerals, Metals and Materials Society (TMS), Seattle, WA, USA (2010)
Aydin, U.; Ismer, L.; Hickel, T.; Neugebauer, J.: Chemical trends for the solution enthalpy of hydrogen in 3d transition metals. Computational Materials Science on Complex Energy Landscapes Workshop, Imst, Austria (2010)
Grabowski, B.; Ismer, L.; Hickel, T.; Neugebauer, J.: Ab initio up to the melting point: Efficient sampling strategies of anharmonic free energies. Computational Materials Science on Complex Energy Landscapes Workshop, Imst, Austria (2010)
Friák, M.; Sob, M.; Kim, O.; Ismer, L.; Neugebauer, J.: Ab initio calculation of phase boundaries in iron along the bcc-fcc transformation path and magnetism of iron overlayers. Seminar at the Department of Materials Physics at Montan Universität Leoben, Leoben, Austria (2009)
International researcher team presents a novel microstructure design strategy for lean medium-manganese steels with optimized properties in the journal Science
About 90% of all mechanical service failures are caused by fatigue. Avoiding fatigue failure requires addressing the wide knowledge gap regarding the micromechanical processes governing damage under cyclic loading, which may be fundamentally different from that under static loading. This is particularly true for deformation-induced martensitic…
With the support of DFG, in this project the interaction of H with mechanical, chemical and electrochemical properties in ferritic Fe-based alloys is investigated by the means of in-situ nanoindentation, which can characterize the mechanical behavior of independent features within a material upon the simultaneous charge of H.
The full potential of energy materials can only be exploited if the interplay between mechanics and chemistry at the interfaces is well known. This leads to more sustainable and efficient energy solutions.
This project is part of Correlative atomic structural and compositional investigations on Co and CoNi-based superalloys as a part of SFB/Transregio 103 project “Superalloy Single Crystals”. This project deals with the identifying the local atomic diffusional mechanisms occurring during creep of new Co and Co/Ni based superalloys by correlative…