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Title: Dynamic fracture of tantalum under extreme tensile stress

Journal Article · · Science Advances
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  1. Osaka Univ. (Japan); Pierre and Marie Curie Univ., Paris (France)
  2. Osaka Univ. (Japan)
  3. Dukhov Research Inst. of Automatics, Moscow (Russia); Russian Academy of Sciences (RAS), Moscow (Russian Federation)
  4. Sorbonne Univ., Paris (France)
  5. Osaka Univ. (Japan); Helmholtz-Zentrum Dresden-Rossendorf, (Germany)
  6. Japan Synchreotron Radiation Research Inst., Sayo (Japan); RIKEN Center, Sayo (Japan)
  7. RIKEN Center, Sayo (Japan)
  8. Japan Synchrotron Radiation Research Inst., Sayo (Japan); RIKEN Center, Sayo (Japan)
  9. Japan Synchrotron Radiation Research Inst., Sayo (Japan)
  10. Pierre and Marie Curie Univ., Paris (France); Osaka Univ. (Japan)
  11. SLAC National Accelerator Lab., Menlo Park, CA (United States); European X-ray Free-Electron Laser (XFEL), Schenefeld (Germany)
  12. Dukhov Research Inst. of Automatics, Moscow (Russia)
  13. Okayama Univ., Misasa (Japan)
  14. National Inst. for Materials Science (NIMS), Sayo (Japan). Synchrotron X-ray Station at Spring-8
  15. Hiroshima Univ. (Japan)
  16. Hiroshima Univ. (Japan); Center for High Pressure Science and Technology Advanced Research, Shanghai (China)
  17. Kobe Univ. (Japan)
  18. Ehime Univ., Matsuyama (Japan); Japan Synchrotron Radiation Research Inst., Sayo (Japan)
  19. Pierre and Marie Curie Univ., Paris (France)
  20. RIKEN Center, Sayo (Japan); Osaka Univ. (Japan)

The understanding of fracture phenomena of a material at extremely high strain rates is a key issue for a wide variety of scientific research ranging from applied science and technological developments to fundamental science such as laser-matter interaction and geology. Despite its interest, its study relies on a fine multiscale description, in between the atomic scale and macroscopic processes, so far only achievable by large-scale atomic simulations. Direct ultrafast real-time monitoring of dynamic fracture (spallation) at the atomic lattice scale with picosecond time resolution was beyond the reach of experimental techniques. We show that the coupling between a high-power optical laser pump pulse and a femtosecond x-ray probe pulse generated by an x-ray free electron laser allows detection of the lattice dynamics in a tantalum foil at an ultrahigh strain rate of Embedded Image ~2 × 108 to 3.5 × 108 s-1. A maximal density drop of 8 to 10%, associated with the onset of spallation at a spall strength of ~17 GPa, was directly measured using x-ray diffraction. The experimental results of density evolution agree well with large-scale atomistic simulations of shock wave propagation and fracture of the sample. Our experimental technique opens a new pathway to the investigation of ultrahigh strain-rate phenomena in materials at the atomic scale, including high-speed crack dynamics and stress-induced solid-solid phase transitions.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515; ID0EPMFM18226; 16-08-01181
OSTI ID:
1390704
Journal Information:
Science Advances, Vol. 3, Issue 6; ISSN 2375-2548
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 35 works
Citation information provided by
Web of Science

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Cited By (6)

Development of new diagnostics based on LiF detector for pump-probe experiments journal July 2018
Graphical method for analyzing wide-angle x-ray diffraction journal January 2018
Effect of peak stress and tensile strain-rate on spall in tantalum journal August 2018
Modification of single-crystalline yttria-stabilised zirconia induced by radiation heating from laser-produced plasma journal January 2019
Pressure effect on Kohn anomaly and electronic topological transition in single-crystal tantalum journal August 2019
All Femtosecond Optical Pump and X-Ray Probe: Holey-Axicon for Free Electron Laser preprint May 2020

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