高Fe含量Fe-B-Si-Hf块体非晶合金的结构-性能关联

doi:10.11900/0412.1961.2016.00281

金属学报

2017, Vol. 53

Issue (3): 369-375 DOI: 10.11900/0412.1961.2016.00281

本期目录 | 过刊浏览

高Fe含量Fe-B-Si-Hf块体非晶合金的结构-性能关联

耿遥祥¹(

),张志杰¹,王英敏²,羌建兵²,董闯²,汪海斌¹,特古斯³

1 江苏科技大学材料科学与工程学院镇江 212003
2 大连理工大学三束材料改性教育部重点实验室大连 116024
3 内蒙古师范大学内蒙古自治区功能材料物理与化学重点实验室呼和浩特 010022

Structure-Property Correlation of High Fe-ContentFe-B-Si-Hf Bulk Glassy Alloys

Yaoxiang GENG¹(

),Zhijie ZHANG¹,Yingmin WANG²,Jianbing QIANG²,Chuang DONG²,Haibin WANG¹,Ojied TEGUS³

1 School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
2 Key Lab of Materials Modification by Laser, Ion and Electron Beams, Ministry of Education, Dalian University of Technology, Dalian 116024, China
3 Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, Hohhot 010022, China

引用本文:

耿遥祥,张志杰,王英敏,羌建兵,董闯,汪海斌,特古斯. 高Fe含量Fe-B-Si-Hf块体非晶合金的结构-性能关联[J]. 金属学报, 2017, 53(3): 369-375.
Yaoxiang GENG, Zhijie ZHANG, Yingmin WANG, Jianbing QIANG, Chuang DONG, Haibin WANG, Ojied TEGUS. Structure-Property Correlation of High Fe-ContentFe-B-Si-Hf Bulk Glassy Alloys[J]. Acta Metall Sin, 2017, 53(3): 369-375.

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摘要:

以具有最佳非晶形成能力的新型Fe-B-Si-Hf四元块体非晶合金团簇式成分[Si-B₂Fe_7.7Hf_0.3]Fe (Fe_72.5B_16.7Si_8.3Hf_2.5)为基础,通过添加Fe原子获得了[Si-B₂Fe_7.7Hf_0.3]Fe+Fe_x (x=0、1.5、2、2.5和3,原子个数)系列高Fe含量的Fe-B-Si-Hf四元合金成分。液态急冷、热分析和磁性测量结果表明,随着Fe原子数量的增加,非晶合金的形成能力逐渐降低,形成棒状块体非晶样品的临界尺寸由x=0时的2.5 mm降低到x=2时的1 mm。非晶样品的玻璃态转变温度、晶化温度和Curie温度随Fe原子数量的增加也整体上表现为降低的趋势。该系列非晶样品软磁性能优异,其中[Si-B₂Fe_7.7Hf_0.3]Fe+Fe₂(Fe_76.4B_14.3Si_7.1Hf_2.2)块体非晶合金的饱和磁化强度和矫顽力分别为1.58 T和2.8 A/m。为建立高Fe含量Fe-B-Si-Hf非晶合金的结构-性能关联,构建了{[Si-B₂Fe_7.7Hf_0.3]+[Fe-Fe₁₄]_x_/15}Fe非晶合金的“双团簇”微观结构模型。结果表明,源于α-Fe的[Fe-Fe₁₄]团簇的数量在Fe-B-Si-Hf四元非晶合金的性能变化中起决定作用。

关键词 ：成分设计, Fe-B-Si-Hf块体非晶合金, 软磁性能, “双团簇”模型, 结构-性能关联

Abstract：

Fe-based amorphous alloys are well known for their good magnetic properties. But these alloys were only prepared into ribbon form in early times due to their insufficient glass-forming abilities (GFAs). After first synthesized of Fe-(Al, Ga)-P-C-B bulk glassy alloy, many Fe-based bulk metallic glasses (BMGs) were synthesized. Compared with amorphous alloy ribbons, the GFA of these alloys was significantly improved, but the saturation magnetization (B_s) was less than 1.5 T. To achieve higher B_s in Fe-based amorphous alloys, the Fe content should be maximized and the metalloid and alloying elements contents should be minimized, but it makes glass formation difficult. It is difficult to reveal the effect mechanism of Fe atoms in high Fe-content amorphous alloys, due to the complexity of the amorphous structure. The present work focuses on explores the structure-property correlations of high Fe-content Fe-B-Si-Hf multi-component glassy alloys with an amorphous structure model. A series of high Fe-content alloys with the composition of [Si-B₂Fe_7.7Hf_0.3]Fe+Fe_x (x=0, 1.5, 2, 2.5 and 3) was produced by adding Fe atoms to the ideal cluster formula, which is based on the composition with the best glass-forming ability of [Si-B₂Fe_7.7Hf_0.3]Fe (Fe_72.5B_16.7Si_8.3Hf_2.5) for Fe-B-Si-Hf quaternary alloys. Liquid quench, thermal analysis and magnetic measurement results show that the critical rod size for glassy alloys gradually decreases from 2.5 mm to 1 mm as the number of Fe atoms increases from 0 to 2. The [Si-B₂Fe_7.7Hf_0.3]Fe+Fe₂ (Fe_76.4B_14.3Si_7.1Hf_2.2) bulk glassy alloy has a high saturation magnetization of 1.58 T and a low coercive force of 2.8 A/m. The decreasing of the glass transition temperature, the thermal stability, the glass-forming ability and the Curie temperature with increasing Fe content in Fe-B-Si-Hf glassy alloys was evaluated using a “dual-cluster” ({[Si-B₂Fe_7.7Hf_0.3]+[Fe-Fe₁₄]_x_/15}Fe) amorphous structure model. The result shows that the [Fe-Fe₁₄] cluster from the α-Fe phase plays an important role in determining the properties change for this series high Fe-content Fe-B-Si-Hf glassy alloys.

Key words： composition design Fe-B-Si-Hf bulk glassy alloy soft magnetic property "dual-cluster" model structure-property correlation

收稿日期: 2016-07-05

基金资助:国家自然科学基金项目Nos.51671045和51601073,国际热核聚变实验堆计划项目Nos.2013GB107003和2015GB105003,以及中央高校基本科研业务费项目No;DUT16ZD209

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https://www.ams.org.cn/CN/10.11900/0412.1961.2016.00281 或 https://www.ams.org.cn/CN/Y2017/V53/I3/369

图1 [Si-B2Fe7.7Hf0.3]Fe+Fex (x=0、1.5、2、2.5和3)系列棒状和条带样品的XRD谱

图2 直径为1 mm棒状[Si-B2Fe7.7Hf0.3]Fe+Fe2样品的TEM明场像和SAED谱

图3 [Si-B2Fe7.7Hf0.3]Fe+Fex (x=0、1.5、2、2.5和3)系列非晶条带样品的DSC和DTA曲线

图4 [Si-B2Fe7.7Hf0.3]Fe+Fex (x=0、1.5、2、2.5和3)非晶样品的玻璃态转变温度(Tg)、晶化开始温度(Tx)和约化玻璃转变温度(Trg)随x的变化关系

图5 [Si-B2Fe7.7Hf0.3]Fe+Fex (x=0、1.5、2、2.5和3)非晶条带样品的磁化曲线和磁滞回线

图6 [Si-B2Fe7.7Hf0.3]Fe+Fex (x=0、1.5、2、2.5和3)非晶样品的饱和磁化强度(Bs)和Curie温度(Tc)随x的变化关系

表1 [Si-B2Fe7.7Hf0.3]Fe+Fex (x=0、1.5、2、2.5和3)系列非晶样品的团簇式对应的成分、临界尺寸dc、Tg、Tx、熔化结束温度(Tl)和Trg

图7 {[Si-B2Fe7.7Hf0.3]+[Fe-Fe14]x/15}Fe非晶合金的2维微观结构模型(图中[Si-B2(Fe,Hf)8]和[Fe-Fe14]团簇按类fcc堆垛,连接原子Fe则进入到团簇间的八面体间隙位)

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