Microstructures and Soft Magnetic Properties of Fe76B12Si12 Alloy with Ultra-fine Crystalline Prepared by High Undercooled Method

Zhang Zhenzhong  1  Gao Jianwei  1  Zhao Fangxia  1  Chen Chuanwen  1  Yang Gencang  2

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Microstructures and Soft Magnetic Properties of Fe₇₆B₁₂Si₁₂ Alloy with Ultra-fine Crystalline Prepared by High Undercooled Method
Issue 1, Pages: 5-7(2005)
Published： 2005 ，
DOI：

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[1]张振忠,高建卫,赵芳霞,陈传文,杨根仓.深过冷Fe_(76)B_(12)Si_(12)超细晶材料的凝固组织与软磁性能[J].特种铸造及有色合金,2005(01):5-7+1.

Zhang Zhenzhong 1 Gao Jianwei 1 Zhao Fangxia 1 Chen Chuanwen 1 Yang Gencang 2. Microstructures and Soft Magnetic Properties of Fe₇₆B₁₂Si₁₂ Alloy with Ultra-fine Crystalline Prepared by High Undercooled Method. [J]. Special Casting & Nonferrous Alloys (1):5-7(2005)
[1]张振忠,高建卫,赵芳霞,陈传文,杨根仓.深过冷Fe_(76)B_(12)Si_(12)超细晶材料的凝固组织与软磁性能[J].特种铸造及有色合金,2005(01):5-7+1. DOI：

Zhang Zhenzhong 1 Gao Jianwei 1 Zhao Fangxia 1 Chen Chuanwen 1 Yang Gencang 2. Microstructures and Soft Magnetic Properties of Fe₇₆B₁₂Si₁₂ Alloy with Ultra-fine Crystalline Prepared by High Undercooled Method. [J]. Special Casting & Nonferrous Alloys (1):5-7(2005) DOI：

摘要

首次采用深过冷加水淬的方法

成功地制备了直径为 16mm的样品

高为 15mm

组织中颗粒平均尺寸约为 12 0nm左右的Fe76B12 Si12 合金超细晶材料。其磁损耗P40 01T 和P10 0 01T 分别为普通硅钢片的 40 %和 65 %。系统研究了组织类型及Fe2 B（Si）相尺度对该合金软磁性能的影响

发现该合金的最佳软磁性能位于Fe2 B（Si）相完全粒化的非规则共晶组织区

并且当Fe2 B（Si）相尺寸细化至 0 .3 6～ 0 .5 0 μm时

其软磁性能随着相尺寸的减小而大幅度改善。对以上结果产生的原因进行了讨论。

Abstract

Ultra-fine crystalline Fe 76B 12Si 12 alloy with a diameter of 16 mm

a height of 15 mm and average grain size of about 120 nm

whose magnetic losses of P 400 1t and P 1000 1t are 40% and 65% of those of conventional silical-steel sheet respectively

were successfully prepared by quenching high under-cooled samples in water.Influences of constituent structure and Fe 2B（Si） phase size on the soft magnetic properties of the alloy are examined. It is found that the optimum soft magnetic properties of the alloy occur in the microstructure zone with second anomalous eutectic and completely granularized Fe 2B（Si） phase.Furthermore

the soft magnetic properties can be significantly improved with the phase size reduction when fined Fe 2B（Si） phase size is less than 0.36～0.50 μm. The mechanism was approached also.