Microstructural and Morphological Properties of AlNiCo and CoNi Alloys: An In-Depth Study Based on Low-Energy Mechanical Alloying

This study focused on synthesizing AlNiCo and CoNi materials using a low-energy milling process. The aim was to explore the formation of low-energy phases in both systems, contrasting with the typical research on phases formed under high-energy conditions. In the Co-20 wt% Ni system, the phases Co0....

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Bibliographic Details
Published in:Metals (Basel ) 2024-11, Vol.14 (11), p.1307
Main Authors: Cruz Nieto, Gilberto, Rivera Olvera, Jesús Noé, Díaz de la Torre, Sebastián, Garibay Febles, Vicente, Palacios Gómez, Jesús, Gonzalez Reyes, Leonardo, Diaz Barriga Arceo, Lucía Graciela
Format: Article
Language:English
Subjects:
Alloys
AlNiCo
Analysis
Composite materials
Decomposition
Degassing of metals
Diffraction
Energy
Equilibrium
Face centered cubic lattice
Ferrous alloys
HRTEM
Intermetallic compounds
Magnetic alloys
Mechanical alloying
Metals
Miscibility
Morphology
Nanostructured materials
NiCo
Phase diagrams
Phases
Process controls
Radiation sources
Specialty metals industry
Synthesis
Wear resistance
X-rays
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Summary:This study focused on synthesizing AlNiCo and CoNi materials using a low-energy milling process. The aim was to explore the formation of low-energy phases in both systems, contrasting with the typical research on phases formed under high-energy conditions. In the Co-20 wt% Ni system, the phases Co0.75Ni0.25 and Ni were identified, as well as the FCC cubic phase of CoNi, using X-ray diffraction (XRD) with a molybdenum radiation source. The observed behavior aligned closely with the miscibility curve in the equilibrium phase diagram, which included a region of alloys with varying structures and similar compositions. A notable feature was the presence of a predominantly dispersed hexagonal Ni zone, consisting of nanoparticles. Transmission electron microscopy (TEM) was employed to observe the FCC CoNi phase, which displayed a specific arrangement. AlNiCo and CoNi alloys were successfully synthesized through mechanical alloying, incorporating equilibrium and non-equilibrium phases.
ISSN:2075-4701
2075-4701
DOI:10.3390/met14111307