The effect of structural changes on the functional properties of Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk metallic glass

• DOI: 10.2298/sjee2403391m
• Publication Date: 2024-12-06T10:45:14Z
• Authors: Nebojsa Mitrovic; Bratislav Cukic; Borivoje Nedeljkovic; Aleksandra Kalezi...; Nina Obradovic
• Keywords: successive annealing; magnetic permeability; iron-based alloys; bulk glassy rods; coercivity; 530; hardness; 620

The ferromagnetic Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk metallic glass rods of 1.8 mm diameter were prepared by the copper-mold casting technique. As-quenched and successive furnace annealed samples examined thermal analysis (DTA), X-ray diffraction (XRD), thermomagnetic, coercivity, hardness measurements. wide supercooled liquid region DTx 57 K reduced transition temperature Trg 0.57 indicate enhanced forming ability high stability against crystallization. After third annealing at 673 most intensive stress relief is followed an increase in magnetic permeability 23%, Curie (to 558 K), improvement coercivity about 40%. Coercivity abruptly increases after treatment 773 K, indicating presence crystalline inclusions that hinder relief. XRD pattern rod 873 ? shows several intermetallic compounds formed crystallizing amorphous phase, such as B48B2C2, iron-based Fe2??4C Fe3B. explored for which evolved due to transformation from into phase.