Gradient microstructure, mechanical properties and phase composition of Ni-Cr-Fe alloy under additive manufacturing process

Gradient microstructure, mechanical properties and phase composition of Ni-Cr-Fe alloy under additive manufacturing process

The present study is about 52Ni-19.2Cr-18.7Fe-5.5Nb alloy formed by additive manufacturing process of High-speed direct laser deposition. The microstructure and phase composition were studied with optical microscopy and TEM. Three different areas of deposited layers are presented by columnar dendrit...

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Hauptverfasser: Rashkovets, M. V., Nikulina, A. A., Klimova-Korsmik, O. G., Kislov, N. G., Matts, O. E.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Additive manufacturing
Alloying additive
Columnar structure
Dendritic structure
Equiaxed structure
Ferrous alloys
Grains
Iron
Laser deposition
Laves phase
Mechanical properties
Microstructure
Morphology
Nickel
Optical microscopy
Phase composition
Transmission electron microscopy
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Beschreibung
Zusammenfassung:The present study is about 52Ni-19.2Cr-18.7Fe-5.5Nb alloy formed by additive manufacturing process of High-speed direct laser deposition. The microstructure and phase composition were studied with optical microscopy and TEM. Three different areas of deposited layers are presented by columnar dendrite grains, equiaxed structure, and dendrite grains with secondary arm spacing. The increase in heat input showed a slightly improved in average micro- hardness of the deposited samples. The results of TEM study showed the presence of different Laves phase morphologies depending on heat input.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0034445