Effects of Two-step Annealing on the Magnetic Properties of Iron-based Nanocrystalline Soft Magnetic Material

被引：0
作者：
Song, Qiang [1 ]
Qin, Shuqing [2 ]
机构：
[1] Shandong Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266510, Peoples R China
[2] Machinery Mfg Co Ltd, Laigang Grp, Laiwu 271104, Peoples R China
来源：
NANO-SCALE AND AMOURPHOUS MATERIALS | 2011年 / 688卷
关键词：
two-step annealing; magnetic properties; nanocrystalline alloys; crystallization; SI-B ALLOYS; CU; RIBBONS;
D O I：
10.4028/www.scientific.net/MSF.688.353
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In the present paper, the effects of two-step annealing on the soft magnetic properties of nanocrystalline Fe73.5Cu1Nb3Si13.5B9 melt spun ribbons were studied. The two-step annealing comprises low-temperature preannealing (first step) for an alpha-Fe(Si) phase nucleation in an amorphous matrix, and a subsequent high-temperature annealing (second step) for the growth of precipitated crystallites. Compared with a nanocrystalline alloy obtained by conventional one-step annealing at 550 degrees C for 1 h, the grain size of alpha-Fe(Si) crystalline phase in the Fe73.5Cu1Nb3Si13.5B9 alloy decreased greatly after it is pre-annealed at 480 degrees C for 1 h followed by annealing at 550 degrees C for 40 min. It has been shown that the soft magnetic properties can be significantly improved by applying two-step annealing. The decrease of grain size of alpha-Fe(Si) crystalline phase may result from the nucleation rate increase during the crystallization of pre-annealed.
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页码：353 / +
页数：2
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