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Title: Spall and damage behavior of S200F beryllium

Abstract

We have performed a series of plate impact experiments to study the strength and spall damage behavior of S200F Be. Peak stresses achieved were in the range from 5.6-19.2 GPa. VISAR data show long rise times in the approach to the shocked state believed to be the result of twinning occurring alongside, or in defference to slip, in this hcp material, with its free surface never achieving a steady velocity. This data indicate brittle spall behavior with spall strengths in the range of 0.8-0.9 GPa. In experiments where target thickness is varied, we see evidence of precursor decay and present calculations of the Hugoniot Elastic Limit (HEL). Beryllium is a strategically important material to the aerospace and defense industries worldwide. In spite of this, there is surprisingly little recent literature on the dynamic behavior of this material, particularly the S200F grade. Much of the earlier work was performed on either S200D or S200E grades of Be [1,2] from Brush Wellman, Inc., or on material of unstated pedigree [3]. A discussion of the evolution in material processing, resulting chemical composition, grain size, and crystallographic texture in these as-processed grades of Be can be found in [4]. In general, progressing from S200D,more » to E, to F entails reduced BeO and other impurity contents, reduced grain size, and a reduction in crystallographic texture of the starting material [4]. The primary goal of this investigation was to study the strength and damage behavior of S200F under dynamic loading conditions. A secondary goal was to obtain equation-of-state (EOS) data to supplement and compare with those already reported in the literature.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Los Alamos National Laboratory
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
992187
Report Number(s):
LA-UR-09-05055; LA-UR-09-5055
TRN: US201022%%174
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Journal Article
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BERYLLIUM; CHEMICAL COMPOSITION; DECAY; GRAIN SIZE; PLATES; PRECURSOR; PROCESSING; PULSE RISE TIME; SLIP; STRESSES; TARGETS; TEXTURE; THICKNESS; TWINNING; VELOCITY

Citation Formats

Adams, Chris D, Anderson, William W, Gray, George T, Blumenthal, William R, Owens, Chuck T, Freibert, Franz J, Montoya, Johnny M, and Contreras, Paul J. Spall and damage behavior of S200F beryllium. United States: N. p., 2009. Web. doi:10.1063/1.3295186.
Adams, Chris D, Anderson, William W, Gray, George T, Blumenthal, William R, Owens, Chuck T, Freibert, Franz J, Montoya, Johnny M, & Contreras, Paul J. Spall and damage behavior of S200F beryllium. United States. https://doi.org/10.1063/1.3295186
Adams, Chris D, Anderson, William W, Gray, George T, Blumenthal, William R, Owens, Chuck T, Freibert, Franz J, Montoya, Johnny M, and Contreras, Paul J. 2009. "Spall and damage behavior of S200F beryllium". United States. https://doi.org/10.1063/1.3295186. https://www.osti.gov/servlets/purl/992187.
@article{osti_992187,
title = {Spall and damage behavior of S200F beryllium},
author = {Adams, Chris D and Anderson, William W and Gray, George T and Blumenthal, William R and Owens, Chuck T and Freibert, Franz J and Montoya, Johnny M and Contreras, Paul J},
abstractNote = {We have performed a series of plate impact experiments to study the strength and spall damage behavior of S200F Be. Peak stresses achieved were in the range from 5.6-19.2 GPa. VISAR data show long rise times in the approach to the shocked state believed to be the result of twinning occurring alongside, or in defference to slip, in this hcp material, with its free surface never achieving a steady velocity. This data indicate brittle spall behavior with spall strengths in the range of 0.8-0.9 GPa. In experiments where target thickness is varied, we see evidence of precursor decay and present calculations of the Hugoniot Elastic Limit (HEL). Beryllium is a strategically important material to the aerospace and defense industries worldwide. In spite of this, there is surprisingly little recent literature on the dynamic behavior of this material, particularly the S200F grade. Much of the earlier work was performed on either S200D or S200E grades of Be [1,2] from Brush Wellman, Inc., or on material of unstated pedigree [3]. A discussion of the evolution in material processing, resulting chemical composition, grain size, and crystallographic texture in these as-processed grades of Be can be found in [4]. In general, progressing from S200D, to E, to F entails reduced BeO and other impurity contents, reduced grain size, and a reduction in crystallographic texture of the starting material [4]. The primary goal of this investigation was to study the strength and damage behavior of S200F under dynamic loading conditions. A secondary goal was to obtain equation-of-state (EOS) data to supplement and compare with those already reported in the literature.},
doi = {10.1063/1.3295186},
url = {https://www.osti.gov/biblio/992187}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2009},
month = {Thu Jan 01 00:00:00 EST 2009}
}