Abstract
The dynamic elastic limit and spall strength of high-alloy chromium-manganese-nickel steel in the martensitic-austenitic transformation induced by a change in the temperature from −120 to 200°C is measured by recording the complete wave profiles with a VISAR laser interferometer and subsequently analyzing them. The spall strength of the investigated steel in the martensitic phase is found to be 25–30% higher than the strength of steel in the austenitic phase. In this case, the strength decreases in a stepwise manner in a narrow temperature range approximately from −50 to 20°C, where, apparently, basic changes in the internal structure of steel occur due to the martensitic-austenitic transformation. The measured values of the dynamic elastic limit of high-alloy steel have a sufficiently large scatter and hardly decrease with increasing temperature without any features associated with the martensitic-austenitic transformation of the structure.
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Original Russian Text © A.S. Savinykh, G.V. Garkushin, S.V. Razorenov, S. Wolf, L. Kruger.
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Translated from Fizika Goreniya i Vzryva, Vol. 51, No. 1, pp. 143–149, January–February, 2015.
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Savinykh, A.S., Garkushin, G.V., Razorenov, S.V. et al. Influence of the temperature-induced martensitic-austenitic transformation on the strength properties of high-alloy steels under dynamic loading. Combust Explos Shock Waves 51, 124–129 (2015). https://doi.org/10.1134/S001050821501013X
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DOI: https://doi.org/10.1134/S001050821501013X