Summary
It is shown on the basis of experimental data that the long-time hardness of tungsten obeys V. P. Shishokin's exponential laws.
The highest rate of deformation is observed during the first 20–30 sec, and the first period of indentation ends after 5–10 min.
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V. A. Borisenko, Collection: Problems of High-Temperature Strength in Engineering [in Russian] (Kiev, 1963).
V. A. Borisenko and G. S. Pisarenko, Poroshkovaya Metal., No. 5, 95 (1961).
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Borisenko, V.A. The long-time hardness of tungsten. Powder Metall Met Ceram 3, 391–392 (1965). https://doi.org/10.1007/BF00774238
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DOI: https://doi.org/10.1007/BF00774238