MEMS-Based in situ electron-microscopy investigation of rapid solidification and heat treatment on eutectic Al-Cu

Phillip Dumitraschkewitz, Matheus Tunes, Cameron R. Quick, Diego Santa Rosa Coradini, Thomas Kremmer, Parthiban Ramasamy, Peter Uggowitzer, Stefan Pogatscher

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Abstract

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 ma- terial 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 tem- peratures.
OriginalspracheEnglisch
Aufsatznummer118225
Seitenumfang9
FachzeitschriftActa Materialia
Jahrgang239.2022
Ausgabenummer15 October
Frühes Online-Datum3 Aug. 2022
DOIs
PublikationsstatusVeröffentlicht - 15 Okt. 2022

Bibliographische Notiz

Funding Information:
This research was supported by funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant No. 757961 ). The transmission electron-microscopy facility used in this work received funding from the Austrian Research Promotion Agency (FFG) project known as “3DnanoAnalytics” under contract number FFG-No. 858040. The authors thank Prof. Jürgen Eckert for the possibility of using the meltspinning facility at the Erich Schmid Institute. Dr. Stemper is kindly thanked for the help and introduction to the induction furnace. Mr. Cattini is kindly thanked for SEM investigations. Ms. Tatzreiter’s help with metallography is very much acknowledged.

Funding Information:
This research was supported by funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant No. 757961). The transmission electron-microscopy facility used in this work received funding from the Austrian Research Promotion Agency (FFG) project known as “3DnanoAnalytics” under contract number FFG-No. 858040. The authors thank Prof. Jürgen Eckert for the possibility of using the meltspinning facility at the Erich Schmid Institute. Dr. Stemper is kindly thanked for the help and introduction to the induction furnace. Mr. Cattini is kindly thanked for SEM investigations. Ms. Tatzreiter's help with metallography is very much acknowledged.

Publisher Copyright:
© 2022 The Author(s)

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