Open AccessРост перегревных неустойчивостей в метастабильном металле
Author(s) -
В.И. Орешкин
Publication year - 2018
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2018.20.46807.17432
Subject(s) - metastability , instability , materials science , liquid metal , thermodynamics , liquid phase , phase (matter) , metal , mechanics , liquid state , thermal , chemistry , physics , metallurgy , organic chemistry
The development of thermal (overheat) instabilities during the electric explosion of a conducting wire has been analyzed using the theory of small perturbations. At the initial stage of electric explosion (upon melting of the metal), the substance can occur in three phases: liquid, two-phase state (liquid + vapor), and metastable metal liquid (overheated liquid). Comparative analysis of the growth of overheat instabilities is performed as dependent on the phase in which the metal can occur. It is shown that, from the standpoint of development of overheat instability, the most unstable phase is the overheated metastable liquid.