Competition driven nanocrystallization in high Bs and low coreloss Fe–Si–B–P–Cu soft magnetic alloys. (15th January 2015)

• Record Type: Journal Article
• Authors: Sharma, Parmanand; Zhang, Xin; Zhang, Yan; Makino, Akihiro
• Is Part Of: Scripta materialia. Volume 95(2015)
• Page Start: 3
• Page End: 6
• Publication Date: 2015-01-15
• Subjects: High Bs and low coreloss alloys -- Nanocrystallization mechanism in soft magnetic alloys -- NANOMET alloys -- Competition driven nanocrystallization; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2014.08.023
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract : Based on experimental results and Johnson–Mehl–Avrami analysis, we have identified the nanocrystallization mechanism of newly developed Fe-rich Fe–Si–B–P–Cu soft magnetic alloys. Competition for growth among a large number of nuclei that are present in as-quenched state (grain density ∼3 × 10 21 m −3 ) and nucleated after annealing above the critical temperature for new nucleation (grain density ∼8 × 10 22 m −3 ) governs the grain size. A model of nanocrystallization is made to predict the magnetic/structural properties.