Electron beam welding of AlCoCrFeNi2.1 eutectic high-entropy alloy

0564156 - ÚPT 2023 RIV CZ eng C - Conference Paper (international conference)
Rončák, Ján - Adam, O. - Müller, P. - Zobač, Martin
Electron beam welding of AlCoCrFeNi2.1 eutectic high-entropy alloy.
METAL 2022. 31st International Conference on Metallurgy and Materials. Conference Proceedings. Ostrava: TANGER, 2022, s. 773-778. ISBN 978-80-88365-06-8. ISSN 2694-9296.
[METAL 2022. International Conference on Metallurgy and Materials /31./. Brno (CZ), 18.05.2022-19.05.2022]
Institutional support: RVO:68081731
Keywords : AlCoCrFeNi2.1 * electron beam welding * eutectic high-entropy alloys * microstructure
OECD category: Mechanical engineering
https://www.confer.cz/proceedings/metal/2022.pdf

Eutectic high-entropy alloys have become a significantly studied type of material due to their combination of strength and ductility. However, previous research has focused primarily on manufacture, solidification behaviour and mechanical properties. Only a small part of the research has been devoted to welding. This paper is focused on evaluating the weldability of eutectic high-entropy alloy AlCoCrFeNi2.1 in the as-cast state without further heat treatment. The electron beam welding process was performed twice at the same parameters, except for the beam current. Properties such as the depth of the remelted layer, the formation of the heat-affected zone, and the presence of undesirable defects in the welded joints were observed using light and electron microscopy. At the same time, material properties in the form of microstructural stability, chemical composition, and hardness of the welded joints were evaluated.
Permanent Link: https://hdl.handle.net/11104/0335836