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利用XRD和DSC测定了Fe68Ni1Al5Ga2P9.65B4.6Si3C6.75非晶在淬火态和高低温结构弛豫后的热力学参数,并计算出相关的混合焓ΔH值。研究结果发现:随着弛豫退火温度的升高,玻璃转变温度Tg和晶化初始温度Tx呈升高的趋势,晶化峰值温度变化不明显;经673 K高温弛豫后,合金的晶化焓值高于573 K低温弛豫后的值。实验证明:退火后的两种合金的热稳定性都有所增强,经573 K低温退火处理后的非晶合金更加稳定。
The thermodynamic parameters of Fe68Ni1Al5Ga2P9.65B4.6Si3C6.75 amorphous structure after quenching and high and low temperature structural relaxation were determined by XRD and DSC, and the relative enthalpy of mixing ΔH was calculated. The results show that the glass transition temperature (Tg) and initial crystallization temperature (Tx) tend to increase with the increase of relaxation temperature, and the change of crystallization peak temperature is not obvious. After the relaxation at 673 K, the crystallization of the alloy The enthalpy is higher than 573 K after low temperature relaxation. The experimental results show that the thermal stability of both alloys after annealing is enhanced, and the amorphous alloy annealed at 573 K is more stable.