Determination of the conditions of fracture of plutonium and its alloy with gallium under impact loading
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We present the results of numerical analysis of the conditions of cleavage fracture of plutonium and its alloy containing 1.6 wt.% of gallium under impact loading. On the basis of the experimental data obtained earlier, we determine the critical tensile stresses corresponding to the initial stage of macroscopic cleavage fracture of specimens. In our calculations, we take into account the elastoplastic properties of materials and polymorphic transformations in the alloy at normal and elevated (315°C) temperatures.
KeywordsTensile Stress Gallium Plutonium Impact Velocity Uniaxial Tension
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- 1.S. S. Hecker and J. R. Morgan, “Effect of strain rate on the tensile properties of α-and σ-stabilized plutonium,” in:Plutonium 1975 and Other Actinides, North-Holland, Amsterdam (1976), pp. 697–708.Google Scholar
- 2.M. D. Merz, “Strength differential effect in α-Pu,”Met. Trans.,4, No. 4, 1186–1188 (1973).Google Scholar
- 4.Yu. V. Bat’kov, V. K. Golubev, S. A. Novikov, et al., “Fracture of plutonium and its alloy with a mass content of gallium of 1.6% under impact loading,” in:Problems of Nuclear Science and Power Engineering, Ser.Physics of Nuclear Reactors, Issue 1:Impulse Reactors and Simple Critical Assemblies [in Russian], Kurchatov Institute of Atomic Energy, Moscow (1991), pp. 40–42.Google Scholar
- 5.M. D. Merz, J. H. Hammer, and H. E. Kjarmo, “Sound velocity and elastic moduli in α-plutonium at pressures to 50 kbar,” in:Plutonium 1975 and Other Actinides, North-Holland, Amsterdam (1976), pp. 567–571.Google Scholar
- 6.R. L. Moment, “Single-crystal elastic constants of a plutonium-gallium alloy,” in:Plutonium 1975 and Other Actinides, North-Holland, Amsterdam (1976), pp. 687–695.Google Scholar