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

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

The ferromagnetic Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk metallic glass rods of 1.8 mm diameter were prepared prepared by the copper-mold casting technique. As-quenched and successive furnace annealed samples were examined by thermal analysis (DTA), X-ray diffraction (XRD), thermomagnetic, coercivit...

Full description

Saved in:
Bibliographic Details
Main Authors: Mitrović Nebojša, Čukić Bratislav, Nedeljković Borivoje, Kalezić-Glišović Aleksandra, Obradović Nina
Format: Article
Language:English
Published: Faculty of Technical Sciences in Cacak 2024-01-01
Series:Serbian Journal of Electrical Engineering
Subjects:
iron-based alloys
bulk glassy rods
successive annealing
magnetic permeability
coercivity
hardness
Online Access:https://doiserbia.nb.rs/img/doi/1451-4869/2024/1451-48692403391M.pdf
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The ferromagnetic Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk metallic glass rods of 1.8 mm diameter were prepared prepared by the copper-mold casting technique. As-quenched and successive furnace annealed samples were examined by thermal analysis (DTA), X-ray diffraction (XRD), thermomagnetic, coercivity, and hardness measurements. The wide supercooled liquid region DTx of 57 K and reduced glass transition temperature Trg of 0.57 indicate enhanced glass forming ability and high thermal stability against crystallization. After the third annealing at 673 K the most intensive stress relief is followed by an increase in the magnetic permeability of 23%, an increase in the Curie temperature (to 558 K), and an improvement in coercivity of about 40%. Coercivity abruptly increases after thermal treatment at 773 K, indicating the presence of crystalline inclusions that hinder stress relief. The XRD pattern of the rod annealed at 873 К shows several intermetallic compounds formed by crystallizing the amorphous phase, such as B48B2C2, and iron-based compounds Fe2Мо4C and Fe3B. The rods were explored for the increase in hardness which evolved due to stress relief and after transformation from the amorphous into crystalline phase.
ISSN:1451-4869
2217-7183

Similar Items