Phase transformation in tantalum under extreme laser deformation
- Univ. of California, San Diego, La Jolla, CA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- National Univ. of Cuyo, Mendoza (Argentina). Faculty of Exact and Natural Science; National Scientific and Technical Research Council (CONICET), Mendoza (Argentina)
In collaboration with LLNL and Caltech, experiments to test the strain rate and texture dependence of spall strength in tantalum were conducted at Janus in the Jupiter Laser Facility at LLNL from June-July 2014. Part of the laser shots were dedicated to reproducing data from the last set of spall experiments in 2012 and the rest of the laser shots were dedicated to produce new science on spall strength. Experiments were also conducted at the Omega Facility (LLE, U. of Rochester). The limits of spall strength were tested by increasing the strain rate and changing the texture of the samples. This research was successfully completed and a paper has just appeared in Acta materialia. Four papers on amorphization in Si, Ge, B4C, and SiC were published in leading journals. We have now demonstrated that amorphization is an important mechanism of inelastic deformation in covalently bonded solids under shock compression.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of California, San Diego, La Jolla, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; National Institutes of Health (NIH); Agouron Inst., Pasadena, CA (United States)
- Grant/Contract Number:
- AC52-07NA27344; 09-LR-06-118456-MEYM; PE-FG52-09NA-29043; NA0002080
- OSTI ID:
- 1252639
- Alternate ID(s):
- OSTI ID: 1259511; OSTI ID: 1462259; OSTI ID: 1462264
- Report Number(s):
- LLNL-JRNL-689346
- Journal Information:
- Scientific Reports, Vol. 5; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Similar Records
Directional amorphization of boron carbide subjected to laser shock compression
Shock compression of [001] single crystal silicon