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Title: Amorphization and nanocrystallization of silcon under shock compression

Journal Article · · Acta Materialia
 [1];  [1];  [1];  [2];  [2];  [3];  [1]
  1. Univ. of California, San Diego, La Jolla, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. National Univ. of Cuyo, Mendoza (Argentina); 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); Los Alamos National Laboratory (LANL), Los Alamos, NM (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
Grant/Contract Number:
AC52-07NA27344; 09-LR-06-118456-MEYM; PE-FG52-09NA-29043; NA0002080
OSTI ID:
1260490
Alternate ID(s):
OSTI ID: 1397676; OSTI ID: 1462265
Report Number(s):
LLNL-JRNL-687429; DE-UCSD-0002080
Journal Information:
Acta Materialia, Vol. 103, Issue C; ISSN 1359-6454
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 100 works
Citation information provided by
Web of Science

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Cited By (13)

Stress-induced solid-state amorphization of nanocrystalline Ni and NiZr investigated by atomistic simulations journal January 2018
Intensification of shock damage through heterogeneous phase transition and dislocation loop formation due to presence of pre-existing line defects in single crystal Cu journal November 2019
In situ TEM study of deformation-induced crystalline-to-amorphous transition in silicon journal July 2016
Ultra-precision diamond turning of optical silicon—a review journal January 2018
In situ TEM study of the transitions between crystalline Si and nonstoichiometric amorphous oxide under bipolar voltage bias journal June 2019
Directional amorphization of boron carbide subjected to laser shock compression journal October 2016
Amorphous martensite in β-Ti alloys journal February 2018
Direct imaging of ultrafast lattice dynamics text January 2019
Review of molecular dynamics/experimental study of diamond-silicon behavior in nanoscale machining journal June 2018
Surface Nanocrystallization and Amorphization of Dual-Phase TC11 Titanium Alloys under Laser Induced Ultrahigh Strain-Rate Plastic Deformation journal April 2018
Direct imaging of ultrafast lattice dynamics journal March 2019
Deducing density and strength of nanocrystalline Ta and diamond under extreme conditions from X-ray diffraction journal January 2019
Mechanically induced amorphization of small molecule organic crystals journal July 2019

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