Krein, R.; Palm, M.; Heilmaier, M.: Characterization of microstructures, mechanical properties, and oxidation behavior of coherent A2 + L21 Fe–Al–Ti. Journal of Materials Research 24 (11), pp. 3412 - 3421 (2009)
Krein, R.; Palm, M.: The influence of Cr and B additions on the mechanical properties and oxidation behaviour of L21-ordered Fe-Al-Ti-based alloys at high temperatures. Acta Materialia 56 (10), pp. 2400 - 2405 (2008)
Janschek, P.; Bauer-Partenheimer, K.; Krein, R.; Hanus, P.; Palm, M.: Forging of steam turbine blades with an Fe3Al-based alloy. In: Materials Research Society Symposium Proceedings, Vol. 1128, pp. 47 - 52. 2008 Materials Research Society Fall Meeting, Boston, MA, USA, December 01, 2008 - December 05, 2008. (2009)
Krein, R.; Palm, M.; Heilmaier, M.: Microstructure, Strength and Ductility of some Fe–Al–Ti–based Alloys. 5th Discussion Meeting on the Development of Innovative Iron Aluminium Alloys (FEAL 2009), Prague, Czech Republic (2009)
Friák, M.; Deges, J.; Krein, R.; Stein, F.; Palm, M.; Frommeyer, G.; Neugebauer, J.: Combining Experimental and Computational Methods in the Development of Fe3Al-based Materials. 5th Discussion Meeting on the Development of Innovative Iron Aluminium Alloys (FEAL 2009), Prague, Czech Republic (2009)
Hanus, P.; Palm, M.; Krein, R.; Bauer-Partenheimer, K.; Janschek, P.: High-temperature mechanical properties of forged steam turbine blade. 5th Discussion Meeting on the Development of Innovative Iron Aluminium Alloys (FEAL 2009), Prague, Czech Republic (2009)
Krein, R.; Palm, M.: The influence of Cr and B additions on the mechanical properties and oxidation behaviour of L21-ordered Fe–Al–Ti based aluminides at high temperature. TMS Annual Meeting 2008, New Orleans, LA, USA (2008)
Brunetti, G.; Krein, R.; Grosdidier, T.; Palm, M.: Evaluation of the Brittle-to-Ductile Transition Temperature (BDTT)and the fracture modes in Fe–Al–X alloys. 4th Discussion Meeting on the Development of Innovative Iron Aluminium Alloys, Interlaken, Switzerland (2007)
Krein, R.; Palm, M.: Characterisation of microstructures, mechanical properties and oxidation behaviour of Fe–Al–Ti alloys with coherent L21-pecipitates. 4th Discussion Meeting on the Development of Innovative Iron Aluminium Alloys, Interlaken, Switzerland (2007)
Krein, R.; Schneider, A.; Sauthoff, G.; Frommeyer, G.: High-temperature properties of boride-strengthened Fe3Al-based alloys. 13th International Student's Day of Metallurgy, Leoben, Austria (2006)
Krein, R.; Schneider, A.; Sauthoff, G.; Frommeyer, G.: Structure and properties of Fe3Al-based alloys with strengthening boride precipitates. 3rd Discussion Meeting on the Development of Innovative Iron Aluminium Alloys, Mettmann, Germany (2006)
Krein, R.: Einfluss verschiedener Mikrostrukturen auf Festigkeit und Duktilität von Fe-Al-Ti-X-Legierungen. Dissertation, Otto-von-Guericke-Universität, Magdeburg (2009)
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…
Oxidation and corrosion of noble metals is a fundamental problem of crucial importance in the advancement of the long-term renewable energy concept strategy. In our group we use state-of-the-art electrochemical scanning flow cell (SFC) coupled with inductively coupled plasma mass spectrometer (ICP-MS) setup to address the problem.
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…
This project aims to investigate the influence of grain boundaries on mechanical behavior at ultra-high strain rates and low temperatures. For this micropillar compressions on copper bi-crystals containing different grain boundaries will be performed.
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.