Abstract
The results of measurements of the dynamic yield stress and the ultimate strength of aluminum single crystals in the temperature range from 15 to 650°C, which is only 10°C lower than the melting point, are presented. The measurements are made on samples under the action of plane shock waves with a pressure up to 5 GPa behind the front and of a duration of ∼2×10−7 s. It is found that the dynamic yield stress anomalously increases, attaining, in the vicinity of the melting point, a value four times as high as that measured at room temperature. The dynamic strength of the single crystals in this temperature range decreases approximately by 40%, a high strength being preserved in the state in which melting during extension is expected.
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Translated from Fizika Tverdogo Tela, Vol. 43, No. 5, 2001, pp. 839–845.
Original Russian Text Copyright © 2001 by Kanel, Razorenov.
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Kanel, G.I., Razorenov, S.V. Anomalies in the temperature dependences of the bulk and shear strength of aluminum single crystals in the submicrosecond range. Phys. Solid State 43, 871–877 (2001). https://doi.org/10.1134/1.1371368
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DOI: https://doi.org/10.1134/1.1371368