Bulk Multi-Principal Element Alloys (MPEAs) are generally synthesized by casting, a process needing specific equipment. Here, a standard laboratory electric furnace was used to synthesize bulk CoCrFeNi by melting of prealloyed powders followed by natural cooling. The use of prealloyed powders guaranteed atomic-level mixing. In accordance with the literature, the resulting ingot had a face-centered cubic structure. A typical dendritic-interdendritic microstructure was obtained which was explained by partitioning during solidification and grain boundary wetting phenomenon. Post-annealing treatment improved chemical homogeneity without crystallographic phase change. This work shows the feasibility of melt-aided synthesis of CoCrFeNi HEA under static conditions using a conventional laboratory furnace.

In-house synthesis of CoCrFeNi ingots using an electric furnace / Colombini, E.; Lassinantti Gualtieri, M.; Mortalo, C.; Deambrosis, S. M.; Veronesi, P.. - In: MATERIALS LETTERS. - ISSN 0167-577X. - 323:(2022), pp. 132571-132571. [10.1016/j.matlet.2022.132571]

In-house synthesis of CoCrFeNi ingots using an electric furnace

Colombini E.;Lassinantti Gualtieri M.
;
Veronesi P.
2022

Abstract

Bulk Multi-Principal Element Alloys (MPEAs) are generally synthesized by casting, a process needing specific equipment. Here, a standard laboratory electric furnace was used to synthesize bulk CoCrFeNi by melting of prealloyed powders followed by natural cooling. The use of prealloyed powders guaranteed atomic-level mixing. In accordance with the literature, the resulting ingot had a face-centered cubic structure. A typical dendritic-interdendritic microstructure was obtained which was explained by partitioning during solidification and grain boundary wetting phenomenon. Post-annealing treatment improved chemical homogeneity without crystallographic phase change. This work shows the feasibility of melt-aided synthesis of CoCrFeNi HEA under static conditions using a conventional laboratory furnace.
2022
323
132571
132571
In-house synthesis of CoCrFeNi ingots using an electric furnace / Colombini, E.; Lassinantti Gualtieri, M.; Mortalo, C.; Deambrosis, S. M.; Veronesi, P.. - In: MATERIALS LETTERS. - ISSN 0167-577X. - 323:(2022), pp. 132571-132571. [10.1016/j.matlet.2022.132571]
Colombini, E.; Lassinantti Gualtieri, M.; Mortalo, C.; Deambrosis, S. M.; Veronesi, P.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1281751
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