Evaluation of the Theoretical Strength of Metals and Experimental Verification

We propose a method for the evaluation of the theoretical strength of metal under the conditions of tension and shear. The first of these strengths is determined by comparing the strain energy at the time of fracture with the energy losses required for evaporation. The second strength (obtained on t...

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Bibliographic Details
Published in:Materials science (New York, N.Y.) N.Y.), 2021, Vol.56 (4), p.454-460
Main Authors: Ganulich, B. K., Ivanytskyi, Ya. L., Boiko, V. М., Shyshkovskyi, R. О.
Format: Article
Language:English
Subjects:
Aluminum
Analysis
Characterization and Evaluation of Materials
Chemistry and Materials Science
Degassing of metals
Luders lines
Materials Science
Metals
Solid Mechanics
Structural Materials
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Summary:We propose a method for the evaluation of the theoretical strength of metal under the conditions of tension and shear. The first of these strengths is determined by comparing the strain energy at the time of fracture with the energy losses required for evaporation. The second strength (obtained on the basis of the data of observations of Luders lines with the help of an electron microscope; × 5000) is found by comparing the strain energy with the energy spent for melting of the metal. The proposed computational formulas do not require additional assumptions about the ultimate strains. We computed the theoretical strength for aluminum, iron, copper, nickel, lead, and zinc. We also experimentally determined the actual strength of 65G steel and its ultimate strain, which coincides with the theoretical value.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-021-00450-4