JOM

, Volume 62, Issue 1, pp 24–30 | Cite as

Laser shocking of materials: Toward the national ignition facility

  • M. A. Meyers
  • B. A. Remington
  • B. Maddox
  • E. M. Bringa
Materials for Crashworthiness and Defense Overview

Abstract

In recent years a powerful experimental tool has been added to the arsenal at the disposal of the materials scientist investigating materials response at extreme regimes of strain rates, temperatures, and pressures: laser compression. This technique has been applied successfully to mono-, poly-, and nanocrystalline metals and the results have been compared with predictions from analytical models and molecular dynamics simulations. Special flash x-ray radiography and flash x-ray diffraction, combined with laser shock propagation, are yielding the strength of metals at strain rates on the order of 107–108 s−1 and resolving details of the kinetics of phase transitions. A puzzling result is that experiments, analysis, and simulations predict dislocation densities that are off by orders of magnitude. Other surprises undoubtedly await us as we explore even higher pressure/strain rate/temperature regimes enabled by the National Ignition Facility.

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Copyright information

© TMS 2010

Authors and Affiliations

  • M. A. Meyers
    • 1
  • B. A. Remington
    • 2
  • B. Maddox
    • 3
  • E. M. Bringa
    • 3
  1. 1.University of CaliforniaSan DiegoUSA
  2. 2.Lawrence Livermore National Lab.LivermoreUSA
  3. 3.Universidad Nacional de CuzoCuzoArgentina

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