Impact Response of Single Crystal Potassium Chloride at Elevated Temperatures

R. Golkov, D. Kleiman, E. Zaretsky

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Two types of planar impact experiments were performed with [100]-oriented single crystals of potassium chloride (KCl) having initial temperatures ranged from 293 to 523 K. In the experiments of the first type the maximum impact strength did not exceed the pressure Ptr of B1-B2 transformation in KCl. In these experiments the aluminum buffers were placed between the impactor and the sample and the velocity of aluminum-KCl interface was measured by VISAR. The impact strength in the experiments of the second type (with copper buffers) was higher than Ptr and the VISAR was used for monitoring the free surface velocity of the KCl samples. Temperature dependencies of the longitudinal and the bulk sound velocities obtained in the experiments of the first type were used for the treatment of the results of the second-type experiments. The results show clearly the deceleration of the B1-B2 transformation kinetics and the increase of the KCl yield strength with temperature. Similar temperature-induced strengthening was observed recently in aluminum single crystals [G.I. Kanelet et al, J. Appl. Phys. 90, (2001) 136]. The value of the transformation entropy determined from the temperature dependence of Ptr is found to be close to zero.
Original languageEnglish
Title of host publication Shock Compression of Condensed Matter. AIP Conference Proceedings
StatePublished - 1 Jul 2004


  • Mechanical testing impact tests static and dynamic loads
  • Deformation and plasticity
  • Solid-solid transitions
  • High-pressure and shock wave effects in solids and liquids


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