Ram, F.; Zaefferer, S.; Jäpel, T.; Raabe, D.: Error analysis of the crystal orientations and disorientations obtained by the classical electron backscatter diffraction technique. Journal of Applied Crystallography 48 (3), pp. 797 - 813 (2015)
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)
Ram, F.; Zaefferer, S.: Kikuchi bandlet method: A method for accurate Kikuchi band intensity analysis in EBSD patterns. In: emc2012 proceedings (CD-ROM). EMC 2012 - The 15th European Microscopy Congress, Manchester, UK, September 16, 2012 - September 21, 2012. (2012)
Zaefferer, S.; Schemmann, L.; Stechmann, G.; Ram, F.; Archie, F. M. F.: Using orientation microscopy to explore the correlation of materials properties and microstructures. 25th International conference on materials and technology, Portorož, Slovenia (2017)
Li, Z.; Ram, F.; Zaefferer, S.; Raabe, D.; Reed, R. C.: Investigations of dislocation structures in a Ni-based single crystal superalloy using Electron Channeling Contrast Imaging (ECCI) and cross-correlation EBSD. RMS EBSD, Glasgow, Scotland, UK (2015)
Ram, F.: Have we resorted to red herrings to justify our hasty generalizations in materials science? PhD Science Slam, VISIONS IN SCIENCE, Berlin, Germany (2014)
Ram, F.; Khorashadizadeh, A.; Zaefferer, S.: Kikuchi Band Sharpness: A Measure for the Density of the Crystal Lattice Defects. MSE 2014, Darmstadt, Germany (2014)
Ram, F.; Zaefferer, S.: Accurate Kikuchi band localization and its application for diffraction geometry determination. HR-EBSD workshop, Imperial College, London, UK (2014)
Ram, F.; Zaefferer, S.: Plastic strain derivation and Kikuchi band localization by applying the Kikuchi bandlet method to electron backscatter Kikuchi Diffraction patterns. 17th ICOTOM, Dresden; Germany (2014)
Ram, F.: EBSD projection centre’s importance and available methods for resolving it! Seminar Talk at Arbeitskreis EBSD in Garbsen, Garbsen, Germany (2012)
Ram, F.; Zaefferer, S.: Kikuchi Bandlet Method: A Method to Resolve the Source Point Position of an EBSD Pattern. 20th Annual meeting of the German Crystallographic Society, München, Germany (2012)
Ram, F.; Zaefferer, S.: Error Analysis of the Crystal Orientations and Misorientations obtained by the Classical Electron Backscatter Diffraction Method. IMC 2014, Prague, Czech Republic (2014)
Ram, F.; Zaefferer, S.: Error Analysis of the Crystal Orientations and Misorientations obtained by the Classical Electron Backscatter Diffraction Method. MSE 2014, Darmstadt, Germny (2014)
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 plan to investigate the rate-dependent tensile properties of 2D materials such as metal thin films and PbMoO4 (PMO) films by using a combination of a novel plan-view FIB based sample lift out method and a MEMS based in situ tensile testing platform inside a TEM.
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.
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.