Gutiérrez-Urrutia, I.: Electron channelling contrast imaging under controlled diffraction conditions: A powerful technique for quantitative microstructural characterization of deformed materials. International Symposium on Plastic Deformation and Texture Analysis, Alcoy, Spain (2012)
Gutiérrez-Urrutia, I.; Marceau, R. K. W.; Raabe, D.: Multi-scale investigation of strain-hardening mechanisms in high-Mn steels from the mesoscale to the atomic scale. Lecture at Materials Department, Oxford University, Oxford, UK (2012)
Chen, Z.; Boehlert, C.; Gutiérrez-Urrutia, I.; Llorca, J.; Pérez-Prado, M. T.: In-situ analysis of the tensile deformation mechanisms in rolled AZ31. TMS 2012 Annual Meeting, Orlando, FL, USA (2012)
Gutiérrez-Urrutia, I.; Raabe, D.: Evaluation of twin boundary interfaces to strain hardening by electron channeling contrast imaging. TMS 2012 Annual Meeting, Orlando, FL, USA (2012)
Gutiérrez-Urrutia, I.: Electron channeling contrast imaging: A powerful technique for quantitative microstructural characterization of deformed materials in the SEM. Seminar at Bundesanstalt fuer Materialforschung-pruefung (BAM), Berlin, Germany (2012)
Gutiérrez-Urrutia, I.; Raabe, D.: New insights on quantitative microstructure characterization by electron channeling contrast imaging under controlled diffraction conditions in the SEM. Microscopy & Microanalysis, Phoenix, AZ, USA (2012)
Gutierrez-Urrutia, I.; Raabe, D.: Study of deformation twinning and planar slip in a TWIP steel by Electron Channelling Contrast Imaging in a SEM. International Conference on the Textures of Materials, ICOTOM 16, Bombay, India (2011)
Pérez-Prado, M. T.; Boehlert, C.; Llorca, J.; Gutiérrez-Urrutia, I.: In-situ analysis of deformation and recrystallization mechanisms. European Congress on Advanced Materials and Processes, EUROMAT 2011, Montpellier, France (2011)
Gutierrez-Urrutia, I.; Raabe, D.: Dislocation imaging by electron channeling contrast under controlled diffraction conditions in the SEM. Microscopy Conference MC 2011, Kiel, Germany (2011)
Gutierrez-Urrutia, I.; Dick, A.; Hickel, T.; Neugebauer, J.; Raabe, D.: Understanding TWIP steel microstructures by using advanced electron microscopy and ab initio predictions. International Conference on Processing & Manufacturing of Advanced Materials THERMEC 2011, Québec City, QC, Canada (2011)
Gutierrez-Urrutia, I.; Raabe, D.: The influence of planar slip and deformation twinning on mechanical behavior in TWIP steels. International Conference on Processing & Manufacturing of Advanced Materials THERMEC 2011, Québec City, QC, Canada (2011)
Raabe, D.; Gutierrez-Urrutia, I.: Effect of strain path and texture on microstructure in Fe–22 wt.% Mn–0.6 wt.% C TWIP steel. 1st International Conference on High Manganese Steels 2011, Seoul, South Korea (2011)
Gutierrez-Urrutia, I.; Zaefferer, S.; Raabe, D.: Effect of grain size and heterogeneous strain distribution on deformation twinning in a Fe–22Mn–0.6C TWIP steel. THERMEC 2009, Berlin, Germany (2009)
Gutierrez-Urrutia, I.; Zaefferer, S.; Raabe, D.: Quantitative electron channelling contrast imaging: A promising tool for the study of dislocation structures in SEM. Electron Backscatter Diffraction Meeting, Swansea, UK (2009)
Archie, F. M. F.: Nanostructured High-Mn Steels by High Pressure Torsion: Microstructure-Mechanical Property Relations. Master, Materials Chemistry, Lehrstuhl für Werkstoffchemie, RWTH Aachen, Aachen, Germany (2014)
In this project we study - together with the department of Prof. Neugebauer and Dr. Sandlöbes at RWTH Aachen - the underlying mechanisms that are responsible for the improved room-temperature ductility in Mg–Y alloys compared to pure Mg.
The wide tunability of the fundamental electronic bandgap by size control is a key attribute of semiconductor nanocrystals, enabling applications spanning from biomedical imaging to optoelectronic devices. At finite temperature, exciton-phonon interactions are shown to exhibit a strong impact on this fundamental property.
Enabling a ‘hydrogen economy’ requires developing fuel cells satisfying economic constraints, reasonable operating costs and long-term stability. The fuel cell is an electrochemical device that converts chemical energy into electricity by recombining water from H2 and O2, allowing to generate environmentally-friendly power for e.g. cars or houses…
Efficient harvesting of sunlight and (photo-)electrochemical conversion into solar fuels is an emerging energy technology with enormous promise. Such emerging technologies depend critically on materials systems, in which the integration of dissimilar components and the internal interfaces that arise between them determine the functionality.
In this project, we work on a generic solution to design advanced high-entropy alloys (HEAs) with enhanced magnetic properties. By overturning the concept of stabilizing solid solutions in HEAs, we propose to render the massive solid solutions metastable and trigger spinodal decomposition. The motivation for starting from the HEA for this approach…
We have studied a nanocrystalline AlCrCuFeNiZn high-entropy alloy synthesized by ball milling followed by hot compaction at 600°C for 15 min at 650 MPa. X-ray diffraction reveals that the mechanically alloyed powder consists of a solid-solution body-centered cubic (bcc) matrix containing 12 vol.% face-centered cubic (fcc) phase. After hot compaction, it consists of 60 vol.% bcc and 40 vol.% fcc. Composition analysis by atom probe tomography shows that the material is not a homogeneous fcc–bcc solid solution