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论文类型：期刊论文

发表时间：2009-12-01

发表刊物：Frontier Symposium of China Postdoctoral on Materials Science

收录刊物：SCIE、EI、CPCI-S、ISTIC、CSCD、Scopus

卷号：19

期号：6

页面范围：1618-1622

ISSN号：1003-6326

关键字：Cu58.1Zr35.9Al6 alloy; different scanning calorimetry (DSC); crystallization kinetics

摘要：The crystallization kinetics of the bulk amorphous Cu58.1Zr35.9Al6 alloy was examined by differential scanning calorimetry under continuous heating and isothermal annealing. During continuous heating, the activation energy of crystallization was determined to be 383 kJ/mol by Kissinger method. However, on the isothermal annealing, the activation energy was determined to be 459.2 kJ/mol by the Arrhenius method, which was much larger than that obtained from the Kissinger method. The different temperatures at which crystallization occurs are responsible for the discrepancy in the activation energy. The average Avrami exponent of about 3.5 implies that the crystallization process of the bulk amorphous Cu58.1Zr35.9Al6 alloy is diffusion-controlled with a nucleation rate decreasing with time.