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用 DSC 分析方法从动力学角度研究了脉冲电流对 Zr 基大块非晶合金玻璃转变和晶化动力学的影响. 结果表明: Zr41.3Ti14.2Cu12.8Ni10.3Be21.4大块非晶合金经过脉冲电流低温处理后, 其玻璃转变温度 Tg,起始晶化温度 Tx和各晶化峰的峰值温度 Tp 都显著降低, 但过冷液相区?T 基本不变. 用 Kissinger 方程i进行计算的结果表明, 经脉冲电流低温处理后, Zr41.3Ti14.2Cu12.8Ni10.3Be21.4大块非晶合金玻璃转变的表观激活能明显降低, 而晶化的表观激活能基本保持不变. 脉冲电流对 Zr41.3Ti14.2Cu12.8Ni10.3Be21.4 大块非晶玻璃转变行为和晶化动力学的影响与脉冲电流处理所导致的结构弛豫有关.
The influence of pulse current on the glass transition and crystallization kinetics of Zr-based bulk amorphous alloys was studied by DSC method from the viewpoint of kinetics. The results show that Zr41.3Ti14.2Cu12.8Ni10.3Be21.4 bulk amorphous alloy After the pulse current low temperature treatment, the glass transition temperature Tg, the starting crystallization temperature Tx and the peak temperature of each crystallization peak Tp significantly decreased, but the supercooled liquid region? T basically unchanged.Using the Kissinger equation i The results show that the apparent activation energy of glass transition of Zr41.3Ti14.2Cu12.8Ni10.3Be21.4 bulk amorphous alloy decreases obviously, while the apparent activation energy of crystallization remains unchanged after pulse current low temperature treatment. The effect of current on the transformation behavior and crystallization kinetics of Zr41.3Ti14.2Cu12.8Ni10.3Be21.4 bulk amorphous glass is related to the structural relaxation caused by pulse current processing.