Sandlöbes, S.; Zaefferer, S.; Schestakow, I.; Yi, S.; Gonzales-Martinez, R.: On the role of non-basal deformation mechanisms for the ductility of Mg and Mg–Y alloys. Acta Materialia 59 (2), pp. 429 - 439 (2011)
Davut, K.; Zaefferer, S.: Statistical Reliability of Phase Fraction Determination Based on Electron Backscatter Diffraction (EBSD) Investigations on the Example of an Al-TRIP Steel. Metallurgical and Materials Transactions A 41 (9), pp. 2187 - 2196 (2010)
Gutierrez-Urrutia, I.; del Valle, J.; Zaefferer, S.; Raabe, D.: Study of internal stresses in a TWIP steel analyzing transient and permanent softening during reverse shear tests. Journal of Materials Science 45, pp. 6604 - 6610 (2010)
Gutierrez-Urrutia, I.; Zaefferer, S.; Raabe, D.: The effect of grain size and grain orientation on deformation twinning in a Fe–22 wt.% Mn–0.6 wt.% C TWIP steel. Materials Science and Engineering A 527, pp. 3552 - 3560 (2010)
Sandim, M. J. R.; Sandim, H. R. Z.; Zaefferer, S.; Raabe, D.; Awaji, S.; Watanabe, K.: Electron backscatter diffraction study of Nb3Sn superconducting multifilamentary wire. Scripta Materialia 62 (2), pp. 59 - 62 (2010)
Demir, E.; Raabe, D.; Zaafarani, N.; Zaefferer, S.: Investigation of the indentation size effect through the measurement of the geometrically necessary dislocations beneath small indents of different depths using EBSD tomography. Acta Materialia 57, pp. 559 - 569 (2009)
Gutierrez-Urrutia, I.; Zaefferer, S.; Raabe, D.: Electron channeling contrast imaging of twins and dislocations in twinning-induced plasticity steels under controlled diffraction conditions in a scanning electron microscope. Scripta Materialia 61, pp. 737 - 740 (2009)
Imlau, J.; Bleck, W.; Zaefferer, S.: Comparison of damage development in dependence of the local microstructure in low alloyed Al-TRIP-steels, IF steel and a DP steel. Int. J. Materials Research 100, pp. 584 - 593 (2009)
Sato, H.; Zaefferer, S.: A study on the formation mechanisms of butterfly-type martensite in Fe–30% Ni alloy using EBSD-based orientation microscopy. Acta Materialia 57 (6), pp. 1931 - 1937 (2009)
Sato, H.; Zaefferer, S.; Watanabe, Y.: In-situ Observation of Butterfly-type Martensite in Fe-30mass%Ni Alloy during Tensile Test Using High-resolution EBSD. ISIJ International 49, pp. 1784 - 1791 (2009)
Schestakow, I.; Yi, S.; Zaefferer, S.: Twinning-related microstructural evolution during hot rolling and subsequent annealing of pure magnesium. Materials Science & Engineering A 516, pp. 58 - 64 (2009)
Wu, G.; Zaefferer, S.: Advances in TEM orientation microscopy by combination of dark-field conical scanning and improved image matching. Ultramicroscopy 109, pp. 1317 - 1325 (2009)
Zambaldi, C.; Zaefferer, S.; Wright, S. I.: Characterization of order domains in γ-TiAl by orientation microscopy based on electron backscatter diffraction. Journal of Applied Crystallography 42, pp. 1092 - 1101 (2009)
Bastos, A.; Zaefferer, S.; Raabe, D.: Three-dimensional EBSD study on the relationship between triple junctions and columnar grains in electrodeposited Co–Ni films. Journal of Microscopy 230, pp. 487 - 498 (2008)
Frommert, M.; Zobrist, C.; Lahn, L.; Böttcher, A.; Raabe, D.; Zaefferer, S.: Texture measurement of grain-oriented electrical steels after secondary recrystallization. Journal of Magnetism and Magnetic Materials 320, pp. e657 - e660 (2008)
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…
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.
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…
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,...
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
Nickel-based alloys are a particularly interesting class of materials due to their specific properties such as high-temperature strength, low-temperature ductility and toughness, oxidation resistance, hot-corrosion resistance, and weldability, becoming potential candidates for high-performance components that require corrosion resistance and good…