The solidification behavior of a eutectic AlCu specimen is investigated via in situ scanning transmission electron microscope (STEM) experiments. Solidification conditions are varied by imposing various cooling conditions via a micro-electro-mechanical system (MEMS) based membrane. The methodology allows the use of material processed by a melting and casting route close to industrial metallurgically fabricated material for in situ STEM solidification studies. Different rapid solidification morphologies could be obtained solely on a single specimen by the demonstrated strategy. Additional post-solidification heat treatments are investigated in terms of observation of spheroidization of lamellas during annealing at elevated temperatures.
@article{arxiv.2101.02935,
title = {MEMS-based in situ electron-microscopy investigation of rapid solidification and heat treatment on eutectic Al-Cu},
author = {Phillip Dumitraschkewitz and Matheus A. Tunes and Cameron R. Quick and Diego Santa Rosa Coradini and Thomas M. Kremmer and Parthiban Ramasamy and Peter J. Uggowitzer and Stefan Pogatscher},
journal= {arXiv preprint arXiv:2101.02935},
year = {2022}
}