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Indexed by:期刊论文

Date of Publication:2017-10-25

Journal:JOURNAL OF ALLOYS AND COMPOUNDS

Included Journals:SCIE、EI

Volume:722

Page Number:859-863

ISSN No.:0925-8388

Key Words:Fe-based nanocrystalline materials; Soft magnetic properties; Cu content; alpha-Fe nuclei; Manufacturability

Abstract:High saturation magnetic flux density (B-s) soft magnetic nanocrystalline alloys with good manufacturability were developed in a simple Fe-Si-B-Cu alloy system with high Cu concentrations. The nanocrystalline alloys with high Bs of similar to 1.77 T and low coercivity of similar to 7.1 A m were obtained by annealing the melt-spun Fe-Si-B-Cu alloys containing 1.7-2.0 at% Cu. The high content of Cu facilitates the formation of high-number-density alpha-Fe nuclei with an average grain size of similar to 6 nm pre-existing in the amorphous matrix, which inhibits the excessive growth of the alpha-Fe grains by their competitive growth even during the low-heating-rate annealing, resulting in a fine nanostructure and excellent soft magnetic properties. (C) 2017 Elsevier B.V. All rights reserved.