[PDF] Top 20 Ultrasound Induced Structural Anomaly of Supercooled Liquid in Some Bulk Metallic Glasses

... of ultrasound vibrations in the rapid crystallization is considered ...by ultrasound vibrations is estimated to be ð=2ÞM 2 10 28 J/ atom, where is the atomic volume, M is the elastic modulus, and is the ... See full document

... of bulk metallic glasses utilizing the constructs of the Shear Transformation Zone (STZ) and barrier height (W ) to configurational change (which is hypothesized to be directly proportional to the ... See full document

... superplasticity in the supercooled liquid state. 2) The interface corresponding the thickness of protrusion seems to be heated above the glass transition temperature, the projection seems to be formed by ... See full document

... temperature supercooled liquid region and the high temperature melting region, ...the supercooled liquid state was chosen as T g , rather than the onset that is ... See full document

... Vitreloy glasses and their composites are experimentally investigated over a wide range of strain rates and temperatures, with focus on the supercooled liquid regime, by combining uniaxial mechanical ... See full document

... the bulk metallic glasses (BMG’s) are known to have high fracture toughness, fracture behavior of monolithic BMG’s is ...large supercooled liquid region [4] and subsequent application ... See full document

... The well controlled microforming process can be achieved by utilizing the superplastic deformation of BMGs in a supercooled liquid region with the help of a computer aided modelling technique for the ... See full document

... 3, 10 at%) amorphous alloy rods. DSC traces of the metallic glasses are shown in Fig. 1(b). The samples exhibit a clear glass transition, followed by a broad supercooled liquid region, and the ... See full document

... Although the result suggests that the dynamic relaxation time appears to be more widely distributed than that of the static relaxation, the plausible explanation is not presented so far. The SRA assumes that the ... See full document

... erythema induced by direct contact with the metal or injection/contact with extracts were tested according to three methods detailed in ISO ...either bulk or extracted ... See full document

... Grad students often daydream about being one of those scientists so accomplished they get equations or physical constants or even elements named after them. Einstein, Curie, Fermi, Nobel, Mendel, Bohr, Lawrence, ... See full document

... Fe-based glasses (Gerling & Wagner, ...radiation induced viscous flow in amorphous solids on the basis of the different behavior interstitial-like and vacancy-like point ... See full document

... irradiation is not high enough to maintain the original structure against electron irradiation so that amorphization of this phase occurs. In other words, crystal-to-amorphous (C- A) transition occurs under electron ... See full document

... Strong, robust joining of metal components is a key consideration in the fabrication of complex assemblies and consumer products. Developing optimal welding and joining practices for each class of materials is critical ... See full document

... Dimple patterns of the BMG fracture surfaces (region “B” in Figure 3-2(a)) are shown in Figure 3-3. This region of the fracture surface is covered by isotropic dimples (no specific directionality) indicating that failure ... See full document

... increased 17.4 milligrams, or 1.636%. This large change in mass was verified by SEM analysis indicating an oxide film with a thickness of 18{23 mm after corrosion in water for 2100 hours (Fig. 5). The film appeared to ... See full document

... several times in order to obtain homogeneity of the alloy. Rods of 2{4 mm have been produced by in-situ solid- ification in a suction casting facility attached to the arc melter. A optical microscope (OM), Zeiss DSM 962 ... See full document

... with some complicated Fe-based alloys reported by two other groups during the course of this research, are the first centimeter-level BMGs based on the ordinary late transition ... See full document

... conducting liquid results in the induction of a vibrating electromagnetic body force with a density of F ¼ J B inside the ...conducting liquid into a vibrating ... See full document

... the supercooled liquid state of the metallic glass cannot be kept stably for a long time, the crystallization would occur in a certain time even at the temperature lower than T x ... See full document