Author:
Wei Hong-Qing ,Li Xiang-An ,Long Zhi-Lin ,Peng Jian ,Zhang Ping ,Zhang Zhi-Chun ,
Abstract
According to the classical crystallization theory, the influences of kinetics and thermodynamics on glassforming ability (GFA) for bulk metallic glasses has been investigated. The theoretical analysis shows that crystallization resistance is in proportion to the viscosity of “nose” temperature (Tn) while crystallization driving force is inversely proportional to the viscosity of crystallization onset temperature (Tx) on reheating in timetemperaturetransformation (TTT) curve, and therefore a GFA parameter ω0, defined as (Tg-T0)/(Tx-T0)-(Tg-T0)/(Tn-T0), was proposed (wherein Tg and T0 are glass transition temperature and Vogel temperature respectively). The parameter ω0 shows an excellent correlation with the critical cooling rate for glass formation of bulk metallic glasses, with the statistical correlation factor of R2=09626. Furthermore, the relationships between the GFA and Trg, ΔTx, γ, γm, ΔTrg, α, β, δ and φ, as well as the fragility of liquid could be explained reasonably based on our proposed ω0 parameter.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy
Cited by
17 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献