Prymak, O.; Stein, F.; Palm, M.; Frommeyer, G.; Raabe, D.: Konstitutionsuntersuchungen im System Nb-Cr-Al: Erste Ergebnisse und weitere Planungen. Workshop: The Nature of Laves Phases VII, MPI für Metallforschung Stuttgart, Germany (2006)
Stein, F.; Frommeyer, G.; Schneider, S. M.: Iron-Silicon Alloys with 3.5, 4.5 and 5.5 wt.% Si Processed under Microgravity. TEMPUS Parabolic Airplane Flight 2006 Meeting, DLR Bonn, Germany (2006)
Stein, F.: The Nature of Laves Phases – A Critical Assessment of the Current Knowledge on Structure and Stability of Laves Phases. Workshop "The Nature of Laves Phases VI, MPI für Chemische Physik fester Stoffe, Dresden, Germany (2006)
Palm, M.; Schneider, A.; Stein, F.; Sauthoff, G.: Strengthening of Fe–Al-Based Alloys for High-Temperature Applications. 3rd Disc.Meeting on the Development of Innovative Iron Aluminium Alloys, Mettmann-Düsseldorf, Germany (2006)
Spiegel, M.; Stein, F.; Pöter, B.: Initial Stages of Oxide Growth on Fe–Al Alloys. 3rd Disc.Meeting on the Development of Innovative Iron Aluminium Alloys, Mettmann-Düsseldorf, Germany (2006)
Stein, F.; Palm, M.: DTA Studies on the Fe–Al Phase Diagram. 3rd Disc.Meeting on the Development of Innovative Iron Aluminium Alloys, Mettmann-Düsseldorf, Germany (2006)
Palm, M.; Schneider, A.; Stein, F.; Sauthoff, G.: Iron-Aluminium-Base Alloys for Structural Applications at High Temperatures: Needs and Prospects. EUROMAT 2005, Prague, Czech Republic (2005)
Stein, F.; Dovbenko, O. I.; Palm, M.: Experimental Investigations of Structure Type Variations of Laves Phases. International Conference on "Modern Materials Science: Achievements and Problems", Kiev, Ukraine (2005)
Stein, F.; Dovbenko, O. I.; Palm, M.: Phase Relations between Laves Phases in Transition Metal Systems - Case Studies: Co–Nb, Al–Co–Nb, Cr–Ti, Fe–Zr, Al–Fe–Zr. EUROMAT 2005, Prague, Czech Republic (2005)
Dovbenko, O. I.; Palm, M.; Stein, F.: Phase Equilibria in the Al–Co–Nb Ternary System in the Vicinity of the Laves Phases. CALPHAD XXXIV, Maastricht, The Netherlands (2005)
Stein, F.; Frommeyer, G.: Untersuchung des Erstarrungsgefüges einer unter Schwerelosigkeit erschmolzenen intermetallischen TiAl-Legierung. Workshop "Entwicklung der Basis - Erkennen der Perspektiven", Materialwissenschaften und mg-Forschung, MPI für Eisenforschung, Düsseldorf, Germany (2005)
Dovbenko, O. I.; Palm, M.; Stein, F.: Investigation of the Phase Equilibria in the Al–Co–Nb System. Preliminary Results. International Workshop "Laves Phases IV", MPI für Eisenforschung, Düsseldorf, Germany (2005)
Dovbenko, O. I.; Palm, M.; Stein, F.: Investigation of the Phase Equilibria in the Al–Co–Nb System using Liquid-Solid Diffusion Couples. Preliminary Results. COST 535 Diffusion Couple Workshop, MPI für Eisenforschung, Düsseldorf, Germany (2004)
Stein, F.; Jiang, D.; Palm, M.; Sauthoff, G.: Laves Phase Polytypism in the Co–Nb System. TOFA 2004 - Discussion Meeting on Thermodynamics of Alloys, Wien, Austria (2004)
Magnetic properties of magnetocaloric materials is of utmost importance for their functional applications. In this project, we study the magnetic properties of different materials with the final goal to discover new magnetocaloric materials more suited for practical applications.
In this project, we work on a generic solution to design advanced high-entropy alloys (HEAs) with enhanced magnetic properties. By overturning the concept of stabilizing solid solutions in HEAs, we propose to render the massive solid solutions metastable and trigger spinodal decomposition. The motivation for starting from the HEA for this approach…
This study investigates the mechanical properties of liquid-encapsulated metallic microstructures created using a localized electrodeposition method. By encapsulating liquid within the complex metal microstructures, we explore how the liquid influences compressive and vibrational characteristics, particularly under varying temperatures and strain…
We have studied a nanocrystalline AlCrCuFeNiZn high-entropy alloy synthesized by ball milling followed by hot compaction at 600°C for 15 min at 650 MPa. X-ray diffraction reveals that the mechanically alloyed powder consists of a solid-solution body-centered cubic (bcc) matrix containing 12 vol.% face-centered cubic (fcc) phase. After hot compaction, it consists of 60 vol.% bcc and 40 vol.% fcc. Composition analysis by atom probe tomography shows that the material is not a homogeneous fcc–bcc solid solution
Local lattice distortion is one of the core effects in complex concentrated alloys (CCAs). It has been expected that the strength CCAs can be improved by inducing larger local lattice distortions. In collaboration with experimentalists, we demonstrated that VCoNi has larger local lattice distortions and indeed has much better strength than the…
In this project, we work on the use of a combinatorial experimental approach to design advanced multicomponent multi-functional alloys with rapid alloy prototyping. We use rapid alloy prototyping to investigate five multicomponent Invar alloys with 5 at.% addition of Al, Cr, Cu, Mn and Si to a super Invar alloy (Fe63Ni32Co5; at.%), respectively…
The aim of the current study is to investigate electrochemical corrosion mechanisms by examining the metal-liquid nanointerfaces. To achieve this, corrosive fluids will be strategically trapped within metal structures using novel additive micro fabrication techniques. Subsequently, the nanointerfaces will be analyzed using cryo-atom probe…
In this project we pursue recent developments in the field of austenitic steels with up to 18% reduced mass density. The alloys are based on the Fe-Mn-Al-C system.