He, D.; Zhu, J.; Zaefferer, S.; Raabe, D.: Effect of retained beta layer on slip transmission in Ti–6Al–2Zr–1Mo–1V near alpha titanium alloy during tensile deformation at room temperature. Materials and Design 56, pp. 937 - 942 (2014)
Ram, F.; Zaefferer, S.; Raabe, D.: Kikuchi bandlet method for the accurate deconvolution and localization of Kikuchi bands in Kikuchi diffraction patterns. Journal of Applied Crystallography 47, pp. 264 - 275 (2014)
Gutiérrez-Urrutia, I.; Zaefferer, S.; Raabe, D.: Coupling of Electron Channeling with EBSD: Toward the Quantitative Characterization of Deformation Structures in the SEM. JOM: the Journal of the Minerals, Metals & Materials Society (TMS) 65 (9), pp. 1229 - 1236 (2013)
Davut, K.; Zaefferer, S.: Improving the Reliability of EBSD-based Texture Analysis by a New Large Area Mapping Technique. Materials Science Forum 702-703, pp. 566 - 569 (2012)
Davut, K.; Zaefferer, S.: The effect of size and shape of austenite grains on the mechanical properties of a low-alloyed TRIP steel. Steel Research International 83 (6), pp. 584 - 589 (2012)
He, D.; Zaefferer, S.; Zhu, J. C.; Lai, Z. L.: Three-Dimensional Morphological and Crystallographic Investigation of Lamellar Alpha and Retained Beta in a Near Alpha Titanium Alloy by Combination of Focused Ion Beam and Electron Backscattering Diffraction. Steel Research International 83, pp. 496 - 500 (2012)
He, D.; Zhu, J. C.; Zaefferer, S.; Raabe, D.; Liu, Y.; Lai, Z. L.; Yang, X. W.: Influences of deformation strain, strain rate and cooling rate on the Burgers orientation relationship and variants morphology during beta -> alpha phase transformation in a near alpha titanium alloy. Materials Science and Engineering A 549, pp. 20 - 29 (2012)
Yi, S. B.; Rayas, L.; Sandlöbes, S.; Zaefferer, S.; Letzig, D.; Kainer, K.: Influence of Rare Earth Addition on Texture Development during Static Recrystallization and Mechanical Behaviour of Magnesium Alloy Sheets. Materials Science Forum 702-703, pp. 651 - 654 (2012)
Khorashadizadeh, A.; Raabe, D.; Zaefferer, S.; Rohrer, G. S.; Rollett, A. D.; Winning, M.: Five-Parameter Grain Boundary Analysis by 3D EBSD of an Ultra Fine Grained CuZr Alloy Processed by Equal Channel Angular Pressing. Advanced Engineering Materials 13, pp. 237 - 244 (2011)
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)
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…
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.
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.
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.
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.
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…
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…