Fe73-xNb4Hf3YxB20块体非晶合金的制备及其性能

来源期刊:中国有色金属学报2009年第3期

论文作者:张志纯 龙志林 李峰 彭建 危洪清 唐平 邵勇

文章页码:523 - 528

关键词:Fe-Nb-Hf-Y-B合金;块体非晶合金;微合金化技术;玻璃形成能力;软磁性能;力学性能, Fe-Nb-Hf-Y-B alloy; bulk amorphous alloy; micro-alloying technology; glass-forming ability; soft-magnetic properties; mechanical properties

Key words:Fe-Nb-Hf-Y-B alloy; bulk amorphous alloy; micro-alloying technology; glass-forming ability; soft-magnetic properties; mechanical properties

摘    要:采用微合金化技术,用铜模铸造法制备Fe-Hf-Nb-B-Y块体非晶合金。采用X射线衍射仪、差示量热扫描仪、扫描电镜、振动样品磁场仪和Instron万能材料试验机研究Fe-Hf-Nb-B-Y合金系的玻璃形成能力、软磁性能和力学性能。结果表明:Y部分替代Fe能明显改善Fe73xNb4- Hf3YxB20合金系的玻璃形成能力;x=0, 1, 2和3时对应合金的最大玻璃形成直径分别为2,3,4和3.5 mm;Fe-Hf-Nb-B-Y块体非晶合金的饱和磁感应强度、矫顽力、弹性模量、弹性应变和压缩断裂强度分别为1.10~1.25 T、3~6 A/m、184~206 GPa、1.6%~2.0%和3 227~3 484 MPa。结合实验数据,初步讨论微合金化对Fe-Hf-Nb-B-Y合金系的玻璃形成能力、软磁性能和力学性能的影响。 关键词:Fe-Nb-Hf-Y-B合金;块体非晶合金;微合金化技术;玻璃形成能力;软磁性能;力学性能

Abstract: By micro-alloying technology, Fe-Hf-Nb-B-Y bulk amorphous alloys were prepared by copper mold casting method. The glass-forming ability (GFA), soft-magnetic and mechanical properties of these bulk amorphous alloys were characterized by X-ray diffractometry (XRD), differential scanning calorimeter (DSC), scanning electronic microscopy (SEM), vibrating sample magnetometry (VSM) and Instron type tester. The results show that a partial substitution of Fe by Y causes a significant improvement of the GFA of Fe-Hf-Nb-B-Y alloys. The maximal diameters for glass formation are 2 mm for Y-free alloy, 3 mm for 1%(molar fraction) Y alloy, 4 mm for 2% Y alloy and 3.5 mm for 3% Y alloy. The saturation magnetization, coercive force, elastic modulus, elastic strain and compressive fracture strength of Fe-Hf-Nb-B-Y bulk amorphous alloys are in the range of 1.10-1.25 T, 3-6 A/m, 184-206 GPa, 1.6%?2.0% and 3 227-3 484 MPa, respectively. Based on the experimental results, the effects of micro-alloying on GFA, soft-magnetic and mechanical properties of the alloy series were discussed.

基金信息:湖南省科技厅计划资助项目
湖南省教育厅科学研究资助项目

有色金属在线官网  |   会议  |   在线投稿  |   购买纸书  |   科技图书馆

中南大学出版社 技术支持 版权声明   电话:0731-88830515 88830516   传真:0731-88710482   Email:administrator@cnnmol.com

互联网出版许可证:(署)网出证(京)字第342号   京ICP备17050991号-6      京公网安备11010802042557号