Multi-strand casting of amorphous alloy wire

Olofinjana, Ayodele; Kern, Joseph; Davies, H.A.

doi:10.1016/0167-577x(95)00024-0

Cited by 3 publications

(2 citation statements)

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“…In the rotating water bath process, it has long been recognised that the success of wire formation depends on (e.g., refs [6,7,35,36]):…”

Section: Factors Affecting Stability Of Melt Jetmentioning

confidence: 99%

“…The cooling rates for the diameter achieved is of the order of 10 5 -10 6 Ks −1 , and is enough to vitrify most readily glass-forming alloys. We have explored the development of direct casting in a multi-stream mode [35,36] where it was demonstrated that the productivity of wire production could be increased through multi-streaming without adversely affecting the wire forming and vitrification processes. This process has potential for scale up, but inconsistency in products after several attempts required the clarification of the many varied factors that affect the melt stream stability and, consequently, the quality of the cast metallic glass wires.…”

Section: Introductionmentioning

confidence: 99%

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On the Stability of the Melt Jet Stream during Casting of Metallic Glass Wires

Olofinjana

Voo

2015

Metals

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Abstract:The factors that affect the stability of the melt stream during the casting of wire directly from the melt have been investigated. It is shown that the criticality of process parameters centres mostly on the forces imposed on the melt stream at confluence with the cooling water. The analysis of these forces indicated that the shear component of the disturbance is dependent on the ratio of the velocity of the melt stream (vm) to that of the cooling water (vw) in accord with results obtained from previous experiments. The role of oxide-forming elements in widening the process parameters range is attributed to the increased stability of the melt stream due to the additional shear force resistance offered by the solid oxide layer. The roles of Cr and Si oxides in stabilising the melt stream are confirmed by X-ray photoelectron spectroscopy (XPS) of wire indicating the presence of these oxides on fresh as-cast wires. Melt superheat and nozzle clearance distance are not strictly stream stability factors, but rather their role in glass formation prescribes optimal limits for fully amorphous wire.

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“…In the rotating water bath process, it has long been recognised that the success of wire formation depends on (e.g., refs [6,7,35,36]):…”

Section: Factors Affecting Stability Of Melt Jetmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%