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)
Al-Sawalmih, A.; Li, C.; Siegel, S.; Fabritius, H.; Yi, S. B.; Raabe, D.; Fratzl, P.; Paris, O.: Microtexture and Chitin/Calcite Orientation Relationship in the Mineralized Exoskeleton of the American Lobster. Advanced Functional Materials 18 (20), pp. 3307 - 3314 (2008)
Raabe, D.; Al-Sawalmih, A.; Yi, S. B.; Fabritius, H.: Preferred crystallographic texture of α-chitin as a microscopic and macroscopic design principle of the exoskeleton of the lobster Homarus americanus. Acta Biomaterialia 3, pp. 882 - 895 (2007)
Yi, S. B.; Zaefferer, S.; Brokmeier, H. G.: Mechanical behaviour and microstructural evolution of magnesium alloy AZ31 in tension at different temperatures. Materials Science and Engineering: A 424 (1-2), pp. 275 - 281 (2006)
Raabe, D.; Romano, P.; Sachs, C.; Fabritius, H.; Al-Sawalmih, A.; Yi, S. B.; Servos, G.; Hartwig, H. G.: Microstructure and crystallographic texture of the chitin-protein network in the biological composite material of the exoskeleton of the lobster Homarus americanus. Materials Science and Engineering A 421, pp. 143 - 153 (2006)
Yi, S. B.; Davies, C. H. J.; Brokmeier, H. G.; Bolmaro, R. E.; Kainer, K. U.; Homeyer, J.: Deformation and texture evolution in AZ31 magnesium alloy during uniaxial loading. Acta Materialia 54, pp. 549 - 562 (2006)
Raabe, D.; Romano, P.; Sachs, C.; Al-Sawalmih, A.; Brokmeier, H. G.; Yi, S. B.; Servos, G.; Hartwig, H. G.: Discovery of a honeycomb structure in the twisted plywood patterns of fibrous biological nano-composite tissue. Journal of Crystal Growth 283, 1-2, pp. 1 - 7 (2005)
Sandlöbes, S.; Schestakow, I.; Yi, S. B.; Zaefferer, S.; Chen, J.; Friák, M.; Neugebauer, J.; Raabe, D.: The relation between shear banding, microstructure and mechanical properties in Mg and Mg–Y alloys. 5th International Conference on Light Metals Technology V, Lüneburg, Germany, July 19, 2011 - July 22, 2011. Materials Science Forum 690, pp. 202 - 205 (2011)
Raabe, D.; Al-Sawalmih, A.; Romano, P.; Sachs, C.; Brokmeier, H. G.; Yi, S. B.; Servos, G.; Hartwig, H. G.: Structure and crystallographic texture of arthropod bio-composites. In: Materials Science Forum, Proceedings of the 14th International Conference on Textures of Materials ICOTOM 14, pp. 1665 - 1674. 14th International Conference on Textures of Materials ICOTOM 14, Leuven, Belgium, July 11, 2005 - July 15, 2005. Trans Tech Publications, Switzerland (2005)
Al-Sawalmih, A.; Fabritius, H.; Yi, S. B.; Li, C.; Siegel, S.; Raabe, D.; Paris, O.: Investigation of the Orientation Relationship Between α-Chitin and Calcite in Crustacean Cuticle Using Microbeam Synchrotron X-ray Diffraction. 15th International Conference on the Texture of Materials (ICOTOM 15), Pittsburgh, PA, USA (2008)
Schestakow, I.; Yi, S. B.; Zaefferer, S.: On the Role of Twin-Intersections for the Formation of the Recrystallisation Texture in Pure Magnesium. 15 th International Conference on the Texture of Materials (ICOTOM 15), Pittsburgh, PA, USA (2008)
Sachs, C.; Yi, S. B.; Raabe, D.: Investigation of the Lattice Strain Evolution in Tension and Compression of Different Phases in the Mineralized Lobster Cuticle. MRS Spring Meeting, San Francisco, CA, USA (2008)
Yi, S. B.: Texture analysis using neutrons and X-rays. PNAM (Photon and Neutron research on Advanced engineering Materials) Autumn School, Hamburg (2005)
Yi, S. B.: The texture evolution in Mg alloy, AZ31, under uni-axial loading. 14th International Conference on Texture of Materials (ICOTOM 14), Leuven, Belgium (2005)
Raabe, D.; Al-Sawalmih, A.; Brokmeier, H. G.; Yi, S. B.: Texture and Smart Anisotropy of the Exoskeleton Tissue of Lobster. MRS Spring Meeting 2005, San Francisco, CA, USA (2005)
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.