Frommeyer, G.; Rablbauer, R.; Brokmeier, K.: Entwicklung und Eigenschaften ultrahochfester und supraduktiler Stähle für den Fahrzeugbau. Clausthal Industriekolloquium Sonderforschungsbereich 675, Clausthal (2007)
Frommeyer, G.; Brüx, U.: Hochfeste und supraduktile Leichtbaustähle für die zukünftige Fahrzeugtechnik. Euroforum - Stahl im Auto, Wiesbaden, Germany (2007)
Rablbauer, R.; Dönecke, K.; Hassel, A. W.; Frommeyer, G.: Mechanical Properties and Corrosion Behaviour of Ferritic Stainless Al Cr Steels. EUROMAT 2007, European Congress and Exhibition an Advanced Materials and Processes, Nürnberg, Germany (2007)
Prymak, O.; Stein, F.; Frommeyer, G.; Raabe, D.: Phase equilibria in the Nb–Cr–Al system at 1150, 1300 and 1450 °C. Workshop "The Nature of Laves Phases IX", Stuttgart, Germany (2007)
Zeller, S.; Gnauk, J.; Frommeyer, G.: Direct casting and rapid solidification of CuAl SMS wires and characterisation of the microstructure. E-MRS 2007 Fall Meeting, Warsaw, Poland (2007)
Frommeyer, G.; Rablbauer, R.; Fischer, R.: Properties of refractory NiAl(Cr, Mo, Re) alloys in relation to atomic defects and microstructures. TMS 2007 Annual Meeting, Orlando, FL, USA (2007)
Frommeyer, G.: Process parameters and microstructures of high silicon containing Fe-Si alloys produced under μg conditions. German User Day, Noordwijk, Netherlands (2007)
Frommeyer, G.; Rablbauer, R.: Properties of refractory NiAl-(Cr, Mo, Re) alloys in relation to Atomic Defects and Microstructures. High Temperature Materials Chemistry, Wien, Austria (2006)
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)
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…
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.
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.
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.
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.
Understanding hydrogen-assisted embrittlement of advanced structural materials is essential for enabling future hydrogen-based energy industries. A crucially important phenomenon in this context is the delayed fracture in high-strength structural materials. Factors affecting the hydrogen embrittlement are the hydrogen content,...
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…