[PDF] Top 20 Relaxation and Crystallization Behavior of the Zr50Cu40Al10 Metallic Glass

... structural relaxation during annealing at 673 K, which is below the glass transition temperature, is likely to be a both topologically and chemically invariant process and involves only a decrease in excess ... See full document

... primary crystallization and finally concluded that the atomic mobilities controlled the ...of crystallization and the relationship to the free ...the crystallization nature of the metallic ... See full document

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... volume relaxation, where the volume of glass was determined from the physical density measured at room temperature after relaxing the sample under a given ...given relaxation. We believe that the ... See full document

... enthalpy relaxation curves bend upward at around 550 K. Such behavior does not obviously allow us to fit each curve to a single ...fit relaxation times to VFT ...volume relaxation curve and two ... See full document

... thermal crystallization of an amorphous phase, solidification, spinodal decomposition and martensitic transformation can be understood using the change in Gibbs free energy from the viewpoint of ...In ... See full document

... tion behavior corresponds to a high-strain-rate ...Tx, crystallization of the super- cooled liquid starts and proceeds with increasing preheating ... See full document

... Metallic glasses (MGs) are known to exhibit high strength and elastic limit, making them attractive for structural applica- tions. However, a main limitation on their applications is their very limited macroscopic ... See full document

... of crystallization or with thickness variations and/or surface defects of the ribbons practically unavoidable during ...multicomponents metallic glasses, nanoscale composi- tional heterogeneities were ... See full document

... flow behavior is very sensitive to the strain rate and the size of crystalline precipitates, which can be classified into 4 types based on shape of the stress–strain curve: stress overshoot mode, stable viscous flow ... See full document

... the glass transition temperature, and the slope of the diffusivity of the glassy alloy above the glass transition temperature is larger than that below the glass transition ...the glass ... See full document

... X.L. Ji et al. have shown that the heat treatment greatly impacts the erosion-corrosion resistance of BMGs [32]. Under high impingement angle, high impact velocity, and high sand concentration, annealed BMG sample ... See full document

... minimum. Crystallization is anticipated to take place with continuous heating (particularly under loading for the stress-induced crystallization effect) and viscosity ...corresponding crystallization ... See full document

... Glassy alloys have two distinct features: the glassy structure and metallic bonding. One of the interesting characteristics of glassy alloys is the mechanical property because a glassy alloy exhibits a ductile ... See full document

... electron irradiation at 298 K. SAD pattern of the melt-spun amorphous phase shows only broad halo rings corresponding to an amorphous single phase. In the specimen electron irradiated at the total dose of 1:2 10 27 m 2 , ... See full document

... below glass transition if crystallization is suppressed during ...apparent glass transition occurs, a flow defect is produced in the glass and then the density decreases during this ... See full document

... from crystallization upon heating or thermal process, that is, how the thermal stability of BMGs is ...during crystallization, and (iv) a large amount of the elastic strain energy yielded by ... See full document

... bulk metallic glass has been investigated using XRD, DSC, HRTEM, EXAFS, and dilatometry after annealing at a fixed temperature at 688 K in the supercooled liquid region for various ...structural ... See full document

... The crystallization behavior of Vit1 at four different levels of undercooling is indicated in Figure ...K, crystallization occurs after about 350 seconds as observed by the single, sharp ...The ... See full document

... surface crystallization occurred during annealing prior to the major crystallization within the sample volume, which caused the change in the electropolishing behavior from uniform thinning to uneven ... See full document