Work

Synergistic Effects of Nb and Co on the Structural Evolution and Magnetic Hardening of a Multi-Component Al82Fe12Cu2Nb2Co2 Amorphous Alloy

Year: 2026

Type: article

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.

Source: Applied Sciences

DOI: 10.3390/app16094489

Authors: Oanh Nguyen Thi Nguyen, Mai Dinh Dinh, Viet Nguyen Nguyen

Institutions: Trường Đại học Khoa học và Công nghệ Hà Nội, Hanoi University of Science and Technology

Language: English

Topic: Metallic Glasses and Amorphous Alloys

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,896

Funder: Bộ Giáo dục và Ðào tạo