The explanation of transition between ductile and brittle modes of fracture based on the “incubation time” concept is proposed. This approach allows us to establish relation between the influences of different loading parameters (strain-rate, temperature) on the mode of fracture. Proposed criteria give explanation to anomalous behavior of yield limit and possible high-temperature embrittlement.
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Gruzdkov, A.A. and Petrov, Y.V.On temperature-time correspondence in high-rate deformation of metals. Doklady Physics, 44, 114 (1999).
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Krüger, L. , Meyer, L.W., Razorenov, S.V. and Kanel, G.I. International Journal of Impact Engineering , 28, 877-890 (2003).
15.
Kanel, G.I. and Razorenov, S.V.Anomalies of the temperature dependencies of volume and shear strength of single-crystals of aluminum in sub-microsecond range. Phizika Tverdogo Tela, 43, 839 (2001).
16.
Petrov, Y.V. and Sitnikova, E.V.Temperature dependence of spall strength and the effect of anomalous melting temperatures in shock wave loading. Technical Physics, 50, 1034-1037 (2005).
17.
Morozov, N.F. , Petrov, Y.V. and Smirnov V.I.Transition between brittle and ductile erosional fracture. Doklady Physics, 47, 525 (2002).
18.
Kanel, G.I., Razorenov, S.V., Zaretsky, E.B., Herrmann, B. and Meyer, L.Phizika Tverdogo Tela, 45, 625-629 (2003).
19.
Razorenov, S.V. , Savinykh, A.S., Kanel, G.I. and Skakun, S.N.Sub-microsecond yield and tensile strength of metals and alloys at elevated temperatures. Shock Compression of Condensed Matter, ed. M. D. Furnish, Y. M. Gupta and J. W. Forbes, pp. 491-494, AIP, New York, 2004.
20.
Petrov, Y.V., Gruzdkov, A.A. and Sitnikova, E.V.Anomalous behaviour of yield stress upon an increase in temperature under high strain rate conditions. Doklady Physics, 52, 691-694 (2007).
