Abstract:
he spall strength of hafnium heated by a loading shock wave to thousandths of temperatures and subjected to transformation into denser polymorphic modifications has been determined. The following problems are solved. The pressure profiles at the sample-soft barrier interface in the spall experiments with flat one-dimensional loading are measured. The equations of state of three polymorphic modifications of hafnium are constructed in the pressure range up to 100 GPa. The thermodynamic states of hafnium under the conditions of the performed experiments were calculated. These calculations, together with the results of measurements of pressure profiles, made it possible to determine the spall strength of hafnium heated in a shock compression-unloading cycle. The spall strength of hafnium was -4 (1) GPa at a temperature of 1680 (380) K. Mathematical modeling of spall experiments in the framework of a one-dimensional hydrocode was performed.
Keywords:
spallation, hafnium, polymorphism, shock waves, phase diagram, equation of state, high pressures.
This work was supported by the State Atomic Energy Corporation Rosatom under the state contract no. H.4kh.241.9B.17.1013 dated February 20, 2017, and the state order no. 0089-2019-0001.
Citation:
A. M. Molodets, A. A. Golyshev, “Spall strength of shock-heated hafnium and the equations of state of its polymorphic modifications”, Fizika Tverdogo Tela, 61:8 (2019), 1492–1498; Phys. Solid State, 61:8 (2019), 1437–1443
\Bibitem{MolGol19}
\by A.~M.~Molodets, A.~A.~Golyshev
\paper Spall strength of shock-heated hafnium and the equations of state of its polymorphic modifications
\jour Fizika Tverdogo Tela
\yr 2019
\vol 61
\issue 8
\pages 1492--1498
\mathnet{http://mi.mathnet.ru/ftt8731}
\crossref{https://doi.org/10.21883/FTT.2019.08.47976.442}
\elib{https://elibrary.ru/item.asp?id=41130149}
\transl
\jour Phys. Solid State
\yr 2019
\vol 61
\issue 8
\pages 1437--1443
\crossref{https://doi.org/10.1134/S1063783419080201}
Linking options:
https://www.mathnet.ru/eng/ftt8731
https://www.mathnet.ru/eng/ftt/v61/i8/p1492
This publication is cited in the following 5 articles:
N. N. Seredkin, K. V. Khishchenko, “Equation of State for the Hafnium–Zirconium Alloy at High Pressures and Temperatures in Shock Waves”, High Temp, 62:4 (2024), 450
V. V. Skripnyak, V. A. Skripnyak, “Hexagonal close-packed (hcp) alloys under dynamic impacts”, Journal of Applied Physics, 131:16 (2022)
A. M. Molodets, A. S. Savinykh, A. A. Golyshev, G. V. Garkushin, G. V. Shilov, A. N. Nekrasov, “Shock-Wave Loading and Spall Fracture of Textured Tungsten Samples: Experiment and Simulation”, Phys. Metals Metallogr., 123:5 (2022), 520
A. M. Molodets, A. A. Golyshev, A. N. Emel'yanov, A. A. Kozlov, “Magnetic transformations and polymorphic transition of ferromagnetic steels under shock-wave loading”, Tech. Phys., 66:6 (2021), 755–759
A. M. Molodets, A. A. Golyshev, D. V. Shakhrai, D. Yu. Kovalev, “Spall strength of shock-heated zirconium and phase diagram of its high-pressure polymorphic modification”, Phys. Solid State, 62:1 (2020), 65–73
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