Structural and phase transformations in zinc and brass wires under heating with high-density current pulse

The work is focused on revealing the mechanism of structure and phase transformations in the metal wires under heating with a high-density current pulse (the electric explosion of wires, EEWs). It has been demonstrated on the example of brass and zinc wires that the transition of a current pulse wit...

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Veröffentlicht in:Physics of plasmas 2016-06, Vol.23 (6)
1. Verfasser: Pervikov, A. V.
Format: Artikel
Sprache:eng
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Zusammenfassung:The work is focused on revealing the mechanism of structure and phase transformations in the metal wires under heating with a high-density current pulse (the electric explosion of wires, EEWs). It has been demonstrated on the example of brass and zinc wires that the transition of a current pulse with the density of j ≈ 3.3 × 107 A/cm2 results in homogeneous heating of the crystalline structure of the metal/alloy. It has been determined that under heating with a pulse of high-density current pulse, the electric resistance of the liquid phases of zinc and brass decreases as the temperature increases. The results obtained allow for a conclusion that the presence of the particles of the condensed phase in the expanding products of EEW is the result of overheating instabilities in the liquid metal.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4953418