Dehm, G.; Jaya, B. N.; Raghavan, R.; Kirchlechner, C.: Overview on micro- and nanomechanical testing: New Insights in Interface Plasticity and Fracture at Small Length Scales. Acta Materialia 142, pp. 248 - 282 (2018)
Davydok, A.; Jaya, B. N.; Robach, O.; Ulrich, O.; Micha, J.-S.; Kirchlechner, C.: Analysis of the full stress tensor in a micropillar: Ability of and difficulties arising during synchrotron based μLaue diffraction. Materials and Design 108, pp. 68 - 75 (2016)
Jaya, B. N.; Jayaram, V.: Fracture Testing at Small-Length Scales: From Plasticity in Si to Brittleness in Pt. JOM-Journal of the Minerals Metals & Materials Society 68 (1), pp. 94 - 108 (2016)
Jaya, B. N.; Kirchlechner, C.; Dehm, G.: Can micro-scale fracture tests provide reliable fracture toughness values? A case study in silicon. Journal of Materials Research 30 (5), pp. 686 - 698 (2015)
Jaya, B. N.; Kirchlechner, C.; Dehm, G.: Fracture Behavior of Nanostructured Heavily Cold Drawn Pearlite: Influence of the Interface. TMS 2017, San Diego, CA, USA (2017)
Jaya, B. N.; Alam, M.; Bhowmick, S.; Das , D. K.; Kamat , S. V.; Asif, S. A. S.; Jayaram, V.: Composition and temperature dependence of fracture behavior of diffusion aluminide bond coats. 2016 TMS Annual Meeting and Exhibition Symposium: High-Temperature Systems for Energy Conversion and Storage, Nashville, TN, USA (2016)
Jaya, B. N.; Köhler, M.; Schnabel, V.; Raabe, D.; Schneider, J. M.; Kirchlechner, C.; Dehm, G.: Micro-scale fracture behavior of Co based metallic glass thin films. 2016 TMS Annual Meeting and Exhibition Symposium: In Operando Nano- and Micro-mechanical Characterization of Materials with Special Emphasis on In Situ Techniques, Nashville, TN, USA (2016)
Davydok, A.; Jaya, B. N.; Micha, J.-S.; Kirchlechner, C.: Can We Analyze the Full Strain Tensor During a micro-Compression Experiment? A µLaue case study on Germanium. CNRS GDRi mecano: General Meeting
, Marseille, France (2015)
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…