Elastic precursor decay and spallation in nonporous tungsten carbide ceramics A. S. Savinykh, I. A. Cherepanov, S. V. Razorenov [et al.]
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ArticleSubject(s): карбид вольфрама | непористая керамика | высокоскоростная деформация | ударное сжатиеGenre/Form: статьи в журналах Online resources: Click here to access online
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Technical physics Vol. 64, № 3. P. 356-360Abstract: To identify the possible contribution of relaxation processes to the resistance against high-rate deformation, evolution of shock-compression waves in tungsten carbide (WC) ceramics manufactured by spark-plasma sintering at a maximum compressive stress of 27 GPa is measured. Strong elastic precursor decay upon changing the thickness of the samples from 0.15 to 4 mm is revealed. At maximum shock compressive stresses twice exceeding the Hugoniot elastic limit, a decrease in the spall strength value by about 30% from its value in the elastic region is recorded.
Библиогр.: с. 150-151
To identify the possible contribution of relaxation processes to the resistance against high-rate deformation, evolution of shock-compression waves in tungsten carbide (WC) ceramics manufactured by spark-plasma sintering at a maximum compressive stress of 27 GPa is measured. Strong elastic precursor decay upon changing the thickness of the samples from 0.15 to 4 mm is revealed. At maximum shock compressive stresses twice exceeding the Hugoniot elastic limit, a decrease in the spall strength value by about 30% from its value in the elastic region is recorded.
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