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Author Mayer, Alexander E. ♦ Mayer, Polina N.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword 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
Abstract 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.
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-07-21
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 118
Issue Number 3


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