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…
Biological materials in nature have a lot to teach us when in comes to creating tough bio-inspired designs. This project aims to explore the unknown impact mitigation mechanisms of the muskox head (ovibus moschatus) at several length scales and use this gained knowledge to develop a novel mesoscale (10 µm to 1000 µm) metamaterial that can mimic the…
Microbiologically influenced corrosion (MIC) of iron by marine sulfate reducing bacteria (SRB) is studied electrochemically and surfaces of corroded samples have been investigated in a long-term project.
In this project we investigate the hydrogen distribution and desorption behavior in an electrochemically hydrogen-charged binary Ni-Nb model alloy. The aim is to study the role of the delta phase in hydrogen embrittlement of the Ni-base alloy 718.
Smaller is stronger” is well known in micromechanics, but the properties far from the quasi-static regime and the nominal temperatures remain unexplored. This research will bridge this gap on how materials behave under the extreme conditions of strain rate and temperature, to enhance fundamental understanding of their deformation mechanisms. The…
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.
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.