Lill, K. A.; Stratmann, M.; Frommeyer, G.; Hassel, A. W.: On the corrosion resistance of a new class of FeCrAl light weight ferritic steels. 55th Meeting of the International Society of Electrochemistry, Thessaloniki, Greece (2004)
Falat, L.; Schneider, A.; Sauthoff, G.; Frommeyer, G.: Iron aluminium alloys with strengthening carbides and intermetallic phases for high-temperature applications. Discussion Meeting on the Development of Innovative Iron Aluminium Alloys, MPIE Düsseldorf (2004)
Frommeyer, G.; Derder, C.; Jiménez, J. A.: High temperature plasticity -superplasticity and creep- of Fe3Al based alloys. Discussion Meeting on the Development of Innovative Iron Aluminium Alloys, MPIE Düsseldorf (2004)
Frommeyer, G.; Liu, Z. G.; Wesemann, J.; Wanderka, N.: Investigations on D03/B2 ordering in Fe3Al by X-ray Diffraction, TEM and APFIM. Discussion Meeting on the Development of Innovative Iron Aluminium Alloys, MPIE Düsseldorf (2004)
Stein, F.; Schneider, A.; Frommeyer, G.: Quaternary Fe3Al-Based Alloys with Transition Metals: Effect of Alloying Additions on the Order-Disorder Transitions and the Mechanical Behaviour. Discussion Meeting on the Development of Innovative Iron Aluminium Alloys, MPI für Eisenforschung GmbH, Düsseldorf, Germany (2004)
Konrad, J.; Zaefferer, S.; Schneider, A.; Raabe, D.; Frommeyer, G.: Texturentwicklung beim Warmwalzen und bei der Rekristallisation von Fe3Al-Basislegierungen. Treffen des Fachausschusses Intermetallische Phasen, MPI Eisenforschung, Düsseldorf (2004)
Frommeyer, G.; Knippscheer, S.: Mikrostrukturen, Eigenschaften und Anwendungen neuentwickelter Leichtbauwerkstoffe auf der Basis von Titanaluminiden. Diehl Symposium, Lengenfeld (2003)
Frommeyer, G.: Structures and Properties of the Refractory Silicides Ti5Si3 and TiSi2 and Ti-Si-(Al) Eutectic Alloys. NATO Advanced Research Workshop: Metallic Materials with high Structural Efficiency, Kiev, Ukraine (2003)
Frommeyer, G.; Brüx, U.: Structures and Properties of Advanced High-Strength and Supra-Ductile Light-Weight Steels. EURO MAT 2003, Lausanne, Schweiz (2003)
Frommeyer, G.: Neuere Entwicklungen der Stahlforschung: Hochfeste und supraduktile TRIP/TWIP Leichtbaustähle. Nordrhein-Westfälische Akademie der Wissenschaften, Düsseldorf, Germany (2003)
Frommeyer, G.: Superplastizität und superplastische Blechumformung von Duplex-Stählen am Beispiel der Qualität X 12 Cr Ni Mo (N) 22-5-3. VDI Seminar: Innovative Rostfreistähle, Düsseldorf (2003)
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.