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Bulkier glass formability enhanced by minor alloying additions
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Image of FIG. 1.
FIG. 1.

(a) The critical casting diameter as a function of Ti concentration in a series of alloys , showing (containing 4.9% Ti) is the bulkiest glass-forming alloy; (b) The calculated isopleth, i.e., a temperature versus Ti concentration section, obtained by maintaining the compositions of Cu, Ni, and Al fixed at 31.3%, 4.0%, and 8.5%, respectively. The shaded area denotes the experimentally observed bulk glass-forming range.

Image of FIG. 2.
FIG. 2.

XRD patterns obtained from as-cast rods with diameters of 6 and for the base alloy , for alloy A1 (containing 1.5% Ti), for alloy (containing 4.9% Ti) and for alloy A2 (containing 6.5% Ti).

Image of FIG. 3.
FIG. 3.

DSC traces of a series of alloys (, 1.5, 3.5, 4.9, 6.5, and 8.0), with the specimens being taken from as-cast rods of these alloys. The upward arrows refer to the glass transition temperatures and the downward ones denote the onset crystallization temperatures .

Image of FIG. 4.
FIG. 4.

XRD patterns obtained from as-cast rods with diameters of for alloys B1 , B2 , B3 , and for alloy B4 .


Generic image for table
Table I.

Critical casting diameter of ZrTiCuNiAl alloys whose compositions are obtained by partially substituting Ti for each component (i.e., Zr, “”, Cu, Ni, and Al) in a base alloy . The optimum amount of Ti replacement is determined by the thermodynamic calculations, which is corresponding to the maximum liquidus depression in each replacement scheme.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Bulkier glass formability enhanced by minor alloying additions