Simulation of low-temperature discontinuous yield by the method of additional pulse loading
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On the basis of the proposed method of additional pulse loading of static preloaded specimens at temperatures of 293 and 77 K, we theoretically and experimentally established the possibility of effects similar to the effects of low-temperature discontinuous yield. The obtained effects are caused by operating-technological factors and can be observed only in the process of deep cooling. In particular, by using 03Kh20N16AG6 steel as an example, we show that as the loading rate, the level of preliminarily inclused strains in the material, or the amount of accumulated elastic energy of the loaded system increase, the jumplike development of strains results in a sharp decrease in strain resistance.
KeywordsHigh Strain Rate Elastic Energy Thermal Breakdown Deep Cool Cryogenic Engineer
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- 1.S. N. Kolesnik and V. V. Demirskii, “Relationship between the dynamics of plastic yield and the instability of materials at cryogenic temperatures,” in:Cryogenic Materials and Their Welding [in Russian], Naukova Dumka, Kiev, pp. 61–66 (1986).Google Scholar
- 2.V. A. Strizhalo and E. V. Vorob'ev, “Low-temperature discontinuous yield of structural alloys,”Probl. Prochn., No. 8, 37–46 (1993).Google Scholar
- 3.E. V. Vorob'ev, “Low-temperature hardening of structural alloys under the action of strong magnetic fields,”Probl. Prochn., No. 6, 48–52 (1990).Google Scholar
- 4.V. A. Strizhalo and E. V. Vorob'ev, “Low-temperature discontinuous yield of hardened materials,”Probl. Prochn., No. 10, 3–8 (1994).Google Scholar
- 5.V. A. Strizhalo, E. V. Vorob'ev, and L. S. Novogrudskii,Strength of Alloys Used in Cryogenic Engineering under the Action of Electromagnetic Fields, [in Russian], Naukova Dumka, Kiev (1990).Google Scholar
- 6.V. A. Strizhalo, E. V. Vorob'ev, and L. S. Novogrudskii, “The effect of preliminary deformation on the discontinuous yield of materials at a temperature of 4.2 K,”Probl. Prochn., No. 8, 12–20 (1995).Google Scholar
- 7.G. A. Malygin, “Thermal mechanism of the unstable deformation of metals at low temperatures,”Fiz. Metal. Metalloved., 65, Issue 5, 864–874 (1987).Google Scholar
- 8.O. V. Klyavin,Physics of Plasticity of Crystals at Helium Temperatures [in Russian], Nauka, Moscow (1987).Google Scholar
- 9.Yu. P. Solntsev and G. A. Stepanov,Materials in Cryogenic Engineering. A Handbook [in Russian], Mashinostroenie, Leningrad (1982).Google Scholar