A seven-component (FeCo)_xBSiVCuY amorphous/nanocrystalline alloy system with high ferromagnetic element contents (x = 85, 86 and 87, at atomic percent) was synthesized by rapid quenching method. The microstructure, crystal structure, magnetic property and crystallization behavior were systematically investigated. It is found that the highest saturation magnetization of these as-cast ribbons reaches 1.80 T. Upon heating, two different crystal precipitated phases bcc-Fe (Co) and Fe-metalloids appear successively with temperature intervals (ΔT_x) as large as 193 K. Comparing with typical Fe-based amorphous/nanocrystallization alloys, (Fe_0.8Co_0.2)₈₇B₁₀Si₁V_0.5Cu_0.5Y₁ alloy shows an ultra-low primary crystallization activation energy and a large secondary crystallization activation energy, indicating an extremely large annealing temperature window more than 200 K beneficial for their processing. Therefore, this series of amorphous alloys provide potential precursors with decreasing annealing temperature and time for producing ferromagnetic nanocrystalline alloys, which can significantly reduce the cost for industrial production.

通过快速淬火法合成了具有高铁磁元素含量（x = 85、86和87，原子百分数）的七组分（FeCo）_x BSiVCuY非晶/纳米晶合金体系。系统地研究了其微观结构，晶体结构，磁性和结晶行为。发现这些铸态带的最高饱和磁化强度达到1.80T。加热时，两个不同的晶体沉淀相bcc-Fe（Co）和Fe-准金属相继出现，其温度间隔（ΔT _x）高达193 K.与典型的铁基非晶/纳米晶合金相比，（Fe _0.8 Co _0.2）₈₇ B ₁₀ Si ₁V _0.5 Cu _0.5 Y ₁合金显示出极低的一次结晶活化能和大的二次结晶活化能，表明大于200 K的非常大的退火温度窗口对它们的加工有利。因此，该系列非晶态合金为生产铁磁性纳米晶合金提供了降低退火温度和降低退火时间的潜在前体，从而可以显着降低工业生产成本。