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Title: Continuum model of tensile fracture of metal melts and its application to a problem of high-current electron irradiation of metals

A continuum model of the metal melt fracture is formulated on the basis of the continuum mechanics and theory of metastable liquid. A character of temperature and strain rate dependences of the tensile strength that is predicted by the continuum model is verified, and parameters of the model are fitted with the use of the results of the molecular dynamics simulations for ultra-high strain rates (≥1–10/ns). A comparison with experimental data from literature is also presented for Al and Ni melts. Using the continuum model, the dynamic tensile strength of initially uniform melts of Al, Cu, Ni, Fe, Ti, and Pb within a wide range of strain rates (from 1–10/ms to 100/ns) and temperatures (from melting temperature up to 70–80% of critical temperature) is calculated. The model is applied to numerical investigation of a problem of the high-current electron irradiation of Al, Cu, and Fe targets.
Authors:
;  [1]
  1. Chelyabinsk State University, Bratiev Kashirinykh 129, Chelyabinsk 454001 (Russian Federation)
Publication Date:
OSTI Identifier:
22490809
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CRITICAL TEMPERATURE; CURRENTS; ELECTRONS; FRACTURES; IRRADIATION; LIQUIDS; MECHANICS; MELTING POINTS; METALS; MOLECULAR DYNAMICS METHOD; SIMULATION; STRAIN RATE; TENSILE PROPERTIES