Lyrio, M. S.; Oliveira, H.R.; Sandim, M. J. R.; Devulapalli, V.; Sandim, H. R. Z.: Effect of the scanning strategy on texture of grain-oriented electrical steel (Fe-4wt%Si) processed via laser powder-bed fusion and subsequent thermomechanical processing. Materials Characterization 221, 114789 (2025)
Dhekne, P. P.; Vermeij, T.; Devulapalli, V.; Jadhav, S. D.; Hoefnagels, J. P.M.; Geers, M. G.D.; Vanmeensel, K.: Micro-mechanical deformation behavior of heat-treated laser powder bed fusion processed Ti–6Al–4V. Scripta Materialia 233, 115505 (2023)
Devulapalli, V.; Bishara, H.; Ghidelli, M.; Dehm, G.; Liebscher, C.: Influence of substrates and e-beam evaporation parameters on the microstructure of nanocrystalline and epitaxially grown Ti thin films. Applied Surface Science 562, 150194 (2021)
Dehm, G.; Devulapalli, V.; Schulz, F.; Soares Barreto, E.; Ellendt, N.; Jägle, E. A.: Strengthening of CoCrFe(Mn)Ni high entropy alloys by dislocation pinning: From Lattice friction & SRO to particle strengthening. Possibilities and Limitations of Quantitative Materials Modeling and Characterization 2024, Bernkastel-kues, Germany (2024)
Devulapalli, V.; Dehm, G.; Liebscher, C.: Unravelling grain boundary structures in Ti thin films using aberration-corrected transmission electron microscopy. MSE Darmdtadt (Virtual), Darmstadt, Germany (2020)
Devulapalli, V.; Hans, M.; Prithiv, T. S.; Schneider, J. M.; Dehm, G.; Liebscher, C.: Unravelling the atomic structure and segregation of Ʃ13 [0001] tilt grain boundaries in titanium by advanced STEM. Microscopy Conference 2021 & Multinational Conference on Microscopy 2021, Vienna, Austria (2021)
Devulapalli, V.; Frommeyer, L.; Ghidelli, M.; Liebscher, C.; Dehm, G.: From epitaxially grown thin films to grain boundary analysis in Cu and Ti. International Workshop on Advanced and In-situ Microscopies of Functional Nanomaterials and Devices, IAMNano, Düsseldorf, Germany (2019)
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…
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.
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.
Understanding hydrogen-assisted embrittlement of advanced structural materials is essential for enabling future hydrogen-based energy industries. A crucially important phenomenon in this context is the delayed fracture in high-strength structural materials. Factors affecting the hydrogen embrittlement are the hydrogen content,...
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…