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)
Körmann, F.; Dick, A.; Grabowski, B.; Hickel, T.; Neugebauer, J.: Towards a First-Principles Understanding of the Iron Phase Diagram. 139th Annual Meeting of the Minerals, Metals and Materials Society (TMS), Seattle, WA, USA (2010)
Abbasi, A.; Dick, A.; Hickel, T.; Neugebauer, J.: First principles calculations of the stacking fault energies for Mn and Fe. Computational Materials Science on Complex Energy Landscapes Workshop, Imst, Austria (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)
Dick, A.; Hickel, T.; Neugebauer, J.: Stacking fault properties in high-Mn steels: An ab initio study. Computational Materials Science on Complex Energy Landscapes Workshop, Imst, Austria (2010)
Körmann, F.; Dick, A.; Grabowski, B.; Hickel, T.; Neugebauer, J.: Ab initio determination of the magnetic free energy contribution of metallic systems. Computational Materials Science on Complex Energy Landscapes Workshop, Imst, Austria (2010)
Marquardt, O.; Hickel, T.; Neugebauer, J.: Polarization-induced charge carrier separation in realistic polar and nonpolar GaN quantum dots. Computational Materials Science on Complex Energy Landscapes Workshop, Imst, Austria (2010)
Tillack, N.; Hickel, T.; Raabe, D.; Neugebauer, J.: Kinetic Monte Carlo simulations and ab initio studies of nano-precipitation in ferritic steels. Computational Materials Science on Complex Energy Landscapes Workshop, Imst, Austria (2010)
Zhu, L.-F.; Dick, A.; Friák, M.; Hickel, T.; Neugebauer, J.: First principles study of thermodynamic, structural and elastic properties of eutectic Ti-Fe alloys. 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)
Hickel, T.; Uijttewaal, M.; Al-Zubi, A.; Neugebauer, J.: Ab initio simulation of magnetic shape memory alloys: The interplay of magnetic and vibrational degrees of freedom. Oberseminar: Ultraschnelle Dynamik in Festkörpern und an Grenzflächen, Fakultät für Physik, Universtität Duisburg-Essen, Duisburg, Germany (2010)
Hickel, T.; Neugebauer, J.: Simulation tools for ab initio steel design. CM Special Workshop on "Ab initio Description of Iron, Steel and Related Materials", MPIE, Düsseldorf, Germany (2009)
Nazarov, R.; 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)
Dick, A.; Hickel, T.; Neugebauer, J.: Ab Initio Interfacial Austenite/Martensite Energies for Accurate Stacking Fault Energy Calculations in High-Mn Steels. Materials Research Society 2010 Fall Meeting, Boston, MA, USA (2009)
Marquardt, O.; Hickel, T.; Neugebauer, J.: Polarization-induced charge carrier separation in realistic polar and nonpolar grown GaN quantum dots. Collaborative Conference on Interacting Nanostructures CCIN'09, San Diego, CA, USA (2009)
Hickel, T.; Al-Zubi, A.; Neugebauer, J.: Ab initio investigation of temperature dependent effects in magnetic shape memory Heusler alloys. SPP1239 Fokustreffen A "Fundamentals", Bonn, Germany (2009)
Hickel, T.; Körmann, F.; Dick, A.; Neugebauer, J.: Considerations on the magnetic contribution to the free energy of Fe and related alloys. MCA-Fe. International workshop "Modern computational approaches in iron based alloys”, Ekaterinburg, Russia (2009)
International researcher team presents a novel microstructure design strategy for lean medium-manganese steels with optimized properties in the journal Science
Within this project, we will use a green laser beam source based selective melting to fabricate full dense copper architectures. The focus will be on identifying the process parameter-microstructure-mechanical property relationships in 3-dimensional copper lattice architectures, under both quasi-static and dynamic loading conditions.
Oxides find broad applications as catalysts or in electronic components, however are generally brittle materials where dislocations are difficult to activate in the covalent rigid lattice. Here, the link between plasticity and fracture is critical for wide-scale application of functional oxide materials.
Copper is widely used in micro- and nanoelectronics devices as interconnects and conductive layers due to good electric and mechanical properties. But especially the mechanical properties degrade significantly at elevated temperatures during operating conditions due to segregation of contamination elements to the grain boundaries where they cause…
In this project we work on correlative atomic structural and compositional investigations on Co and CoNi-based superalloys as a part of SFB/Transregio 103 project “Superalloy Single Crystals”. The task is to image the boron segregation at grain boundaries in the Co-9Al-9W-0.005B alloy.