【摘要】 本文以Co₅₀Fe₂₅Nb₁₅B₁₀非晶合金为研究对象，利用DSC、XRD、TEM等检测手段，研究了热处理温度对Co₅₀Fe₂₅Nb₁₅B₁₀合金晶化和析出相的影响，并计算了不同升温速率下的特征温度、晶化激活能等动力学参数。结果表明：Co基非晶合金第一晶化峰值激活能E_p1要大于初始晶化激活能E_x,易获得非晶与纳米晶相互共存的结构。合金热处理后的晶化相为Co₂B和（Fe, Co）₂₁Nb₂B₆相，且在不同温度下发生了不同程度的晶化。当退火温度达到900℃时，合金会发生再结晶，晶粒细化，平均晶粒尺寸为18.1 nm。更多还原

【Abstract】 In this paper, the effects of heat treatment temperatures on the crystallization process and the precipitated phase of Co₅₀Fe₂₅Nb₁₅B₁₀ amorphous alloys were investigated by DSC, XRD and TEM. The kinetic parameters such as characteristic temperature and crystallization activation energy were measured at different heating rates. The results showed that the first crystallization peak activation energy E_p1 of Co-based amorphous alloys was greater than the initial crystallization activation energy E_x, so that the coexisting structure of amorphous and nanocrystalline were easily obtained. Through heat treatment, the crystallized phases were Co₂B and（Fe, Co）₂₁Nb₂B₆ phases, while different degrees of crystallization occurred at different temperatures. When the annealing temperature reached 900 ℃, the alloys would occur recrystallization and the grains were refined with an average grain size of 18.1 nm.更多还原