Fe-Dy-B-M(M=Nb, Ti)块体非晶合金玻璃形成能力及其磁性能的研究
Study on Glass Forming Ability and Magnetic Property of Fe-Dy-B-M(M=Nb,Ti) Bulk Amorphous Alloy
任 强, 陈先朝, 杨元政, 谢致薇
点击：3307次 下载：0次
作者单位：(广东工业大学 材料与能源学院, 广东 广州 510006)
中文关键字：铁基块体非晶合金； 玻璃形成能力； 软磁性能
英文关键字：Fe-based bulk amorphous alloy; glass forming ability; soft magnetic property
中文摘要：采用水冷铜模吸铸法制备了一系列直径为2 mm的(Fe72Dy6B22)1-xNbx(x=0.02，0.03，0.04，0.05)和(Fe72Dy6B22)1-xTix(x=0.01，0.02，0.03，0.04)非晶合金棒，并测试了块体非晶合金的结构、热稳定性和软磁性能。结果表明：一定量的Nb、Ti的添加有助于改善合金的热稳定性和非晶形成能力。其中(Fe72Dy6B22)0.96Nb0.04的过冷液相区宽度ΔTx高达58 ℃，饱和磁感应强度为75.2 emu/g，该合金同时具有较大的热稳定性、较强的玻璃形成能力和较好的软磁性能。
英文摘要：The bulk glassy alloys (Fe72Dy6B22)1-xNbx(x=0.02, 0.03, 0.04, 0.05) and (Fe72Dy6B22)1-xTix(x=0.01, 0.02, 0.03, 0.04) with the diameter of 2 mm were obtained by copper-mold vacuum suction casting. The structure of bulk amorphous alloys, thermal stability and soft magnetic properties were detected. The results show that the thermal stability and glass forming ability can be improved because of the addition of Nb, Ti element, and the amorphous alloy (Fe72Dy6B22)0.96Nb0.04 exhibites wide supercooled liquid region of 58 ℃, high saturation magnetization of 75.2 emu/g. The amorphous alloy has the higher thermal stability, the stronger glass forming ability and the better soft magnetic properties.