热处理工艺对Fe73.5Si13.5B9Cu1Nb3非晶合金磁性能及力学性能的影响

    Effects of Heat Treatment Process on Magnetic and Mechanical Properties of Fe73.5Si13.5B9Cu1Nb3 Amorphous Alloy

      摘要
    • 摘要: 试验以目前应用广泛的Finemet合金(Fe73.5Si13.5B9Cu1Nb3)为研究对象，为了提高Fe73.5Si13.5B9Cu1Nb3合金的软磁性能，将其在510～540℃温度下进行真空退火热处理试验。采用X射线衍射（XRD）、振动样品磁强计（VSM）以及纳米压痕法（Nanoindentation），研究了退火温度对合金条带显微组织、软磁性能及纳米压痕力学行为的影响。结果显示，经过真空退火热处理后的Fe73.5Si13.5B9Cu1Nb3合金条带，其基体内产生了纳米晶，纳米晶的尺寸和晶化程度会随退火温度升高而增大，并且其磁滞回线变得平伏。随着退火温度的升高，合金条带的蠕变量逐渐减小而硬度值却在逐渐升高。

       

      Abstract: The object of the experiment is the Finemet alloy(Fe73.5Si13.5B9Cu1Nb3), which is widely used at present. In order to improve the soft magnetic properties of Fe73.5Si13.5B9Cu1Nb3 alloy, the vacuum annealing heat treatment test was carried out at 510-540 ℃. X-ray diffraction（XRD）, vibrating sample magnetometer（VSM） and nanoindentation method were used to study the effects of annealing temperature on microstructure, soft magnetic properties and nanoindentation mechanical behavior of alloy strips. The results show that after vacuum annealing, the Fe73.5Si13.5B9Cu1Nb3 alloy strip produces nanocrystals in the substrate. The size and degree of nanocrystalline increase with the increase of annealing temperature, and its hysteretic loop becomes flat. With the increase of annealing temperature, the creep variable of alloy strip decreases gradually, but the hardness value increases gradually.

       

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