Roters, F.; Tjahjanto, D. D.; Eisenlohr, P.; Raabe, D.: Homogenisierung von Mehrphasenwerkstoffen zur Simulation von Umformprozessen. 13. Workshop Simulation in der Umformtechnik, Modellierung von Verfestigungsmechanismen in der Blechumformung, Institut für Umformtechnik, Universität Stuttgart, Germany (2010)
Tjahjanto, D. D.; Eisenlohr, P.; Roters, F.: Relaxed grain cluster (RGC) scheme for polycrystals: Model formulation and solution strategy. Computational Mechanics of Polycrystals (CMCn) Workshop 2010, Bad Honnef, Germany (2010)
Eisenlohr, P.; Tjahjanto, D. D.; Roters, F.; Raabe, D.: Coarse-graining of polycrystal plasticity with the Relaxed Grain Cluster scheme. Seminar des Instituts für Technische Mechanik, Karlsruher Institut für Technologie, Karlsruhe, Germany (2009)
Tjahjanto, D. D.; Roters, F.; Eisenlohr, P.: Application of the relaxed grain cluster homogenization scheme to deep drawing simulation of dual-phase steel. 1st International Conference on Material Modelling (ICMM 1), Dortmund, Germany (2009)
Eisenlohr, P.; Tjahjanto, D. D.; Roters, F.; Raabe, D.: Analysis of the relaxed grain cluster polycrystal homogenization scheme in texture prediction. 15th International Conference on the Strength of Materials (ICSMA-15), Dresden, Germany (2009)
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…
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.
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.
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.
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…
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.