Synergistic Effects of Nb and Co on the Structural Evolution and Magnetic Hardening of a Multi-Component Al82Fe12Cu2Nb2Co2 Amorphous Alloy
Source abstract
Abstract
This research investigates the formation of an amorphous phase in a non-equiatomic aluminum-based alloy, Al82Fe12Cu2Nb2Co2, synthesized via mechanical alloying. By utilizing minor additions of Nb, Co, and Cu, structural stability and “chemical complexity” effects are achieved in a matrix dominated by a single element (82% Al). Thermodynamic analysis reveals that a moderately negative mixing enthalpy (ΔHmix = −6.89 kJ/mol) and elevated configurational entropy (ΔSmix = 5.420 J/mol·K) are the primary thermodynamic drivers of amorphization, supplemented by a transitional-regime atomic size mismatch (δ = 4.82%). The evolution of the structure, morphology, and magnetic properties of mechanically alloyed amorphous Al82Fe12Cu2Nb2Co2 as a function of milling time was systematically investigated using X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy, and a vibrating sample magnetometer.
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Research context
OpenAlex topics: Metallic Glasses and Amorphous Alloys · Quasicrystal Structures and Properties · Microstructure and mechanical properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering, Hanoi University of Science and Technology, No 1 Dai Co Viet, Bach Mai, Hanoi 100000, Vietnam
Funding
Ministry of Education and Training
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