Elastic Precursor Decay and Spallation in Nonporous Tungsten Carbide Ceramics

Journal Article · Fri Mar 15 00:00:00 EDT 2019 · Technical Physics

DOI:https://doi.org/10.1134/S1063784219030216· OSTI ID:22927736

Cherepanov, I. A.; Razorenov, S. V. ^[1]; Mandel, K.; Krüger, L. ^[2]

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1. Institute of Problems of Chemical Physics, Russian Academy of Sciences (Russian Federation)
2. Freiberg University of Mining and Technology (Germany)

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.

• OSTI ID: 22927736
• Journal Information: Technical Physics, Vol. 64, Issue 3; Other Information: Copyright (c) 2019 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7842
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CERAMICS
COMPRESSION
DEFORMATION
PLASMA
PRECURSOR
PRESSURE RANGE GIGA PA
RELAXATION
SHOCK WAVES
SINTERING
SPALLATION
STRESSES
THICKNESS
TUNGSTEN CARBIDES