5 papers
Thermal response of an in-situ STEM MEMS chip under rapid pulse heating
Phillip Dumitraschkewitz, Thomas Kremmer
In-situ rapid solidification studies demand measurements of thermal histories with high temporal resolution. We present a simple, effective setup to quantify the cooling response o…
Recrystallisation phenomena in an ultrafine-grained Al-Mg-Si alloy revealed by correlative in situ EBSD and TEM heating
Moritz Theissing, Sandra Gonzaga, Patrick Willenshofer +5
Ultrafine-grained (UFG) aluminium alloys are promising lightweight structural materials for space applications, where a high grain-boundary density can act as sinks for irradiation…
Direct nanoscale observation of melting and solute redistribution in a hypoeutectic Al-Cu alloy with STEM
Martin Hasenburger, Rostislav Daniel, Phillip Dumitraschkewitz +3
Melting and solidification of eutectic systems are classical topics in physical metallurgy, yet the mechanisms at nanoscale are less investigated, due to experimental limitations i…
Unlocking nanoscale microstructural detail in aluminium alloys through differential phase contrast segmentation in STEM
Matheus A. Tunes, Martin Hasenburger, Rostislav Daniel +5
Differential phase contrast (DPC) imaging in scanning transmission electron microscopy (STEM) maps projected electric fields through the phase sensitivity of segmented low-angle de…
Local electrochemical characterization of active Mg-Fe materials: from pure Mg to Mg50-Fe composites
Noémie Ott, Aurélien Tournier Fillon, Oliver Renk +4
This study demonstrates the applicability of the scanning electrochemical nanocapillary (SEN) technique to characterize the local surface reactivity of active systems, such as Mg-b…