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Title: Mesoscale evolution of voids and microstructural changes in HMX-based explosives during heating through the β-δ phase transition

HMX-based explosives LX-10 and PBX-9501 were heated through the β-δ phase transition. Ultra-small angle x-ray scattering (USAXS) and molecular diffraction were simultaneously recorded as the HMX was heated. Mesoscale voids and structure dramatically change promptly with the β-δ phase transition, rather than with other thermal effects. Also, x-ray induced damage, observed in the USAXS, occurs more readily at elevated temperatures; as such, the dose was reduced to mitigate this effect. Optical microscopy performed during a similar heating cycle gives an indication of changes on longer length scales, while x-ray microtomography, performed before and after heating, shows the character of extensive microstructural damage resulting from the temperature cycle and solid-state phase transition.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ; ORCiD logo [1] ;  [1] ;  [1] ;  [1] ; ORCiD logo [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-669215
Journal ID: ISSN 0021-8979; JAPIAU
Grant/Contract Number:
AC52-07NA27344; AC02-05CH11231; AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 118; Journal Issue: 5; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
OSTI Identifier:
1241990
Alternate Identifier(s):
OSTI ID: 1229565

Willey, Trevor M., Lauderbach, Lisa, Gagliardi, Franco, van Buuren, Tony, Glascoe, Elizabeth A., Tringe, Joseph W., Lee, Jonathan R. I., Springer, H. Keo, and Ilavsky, Jan. Mesoscale evolution of voids and microstructural changes in HMX-based explosives during heating through the β-δ phase transition. United States: N. p., Web. doi:10.1063/1.4927614.
Willey, Trevor M., Lauderbach, Lisa, Gagliardi, Franco, van Buuren, Tony, Glascoe, Elizabeth A., Tringe, Joseph W., Lee, Jonathan R. I., Springer, H. Keo, & Ilavsky, Jan. Mesoscale evolution of voids and microstructural changes in HMX-based explosives during heating through the β-δ phase transition. United States. doi:10.1063/1.4927614.
Willey, Trevor M., Lauderbach, Lisa, Gagliardi, Franco, van Buuren, Tony, Glascoe, Elizabeth A., Tringe, Joseph W., Lee, Jonathan R. I., Springer, H. Keo, and Ilavsky, Jan. 2015. "Mesoscale evolution of voids and microstructural changes in HMX-based explosives during heating through the β-δ phase transition". United States. doi:10.1063/1.4927614. https://www.osti.gov/servlets/purl/1241990.
@article{osti_1241990,
title = {Mesoscale evolution of voids and microstructural changes in HMX-based explosives during heating through the β-δ phase transition},
author = {Willey, Trevor M. and Lauderbach, Lisa and Gagliardi, Franco and van Buuren, Tony and Glascoe, Elizabeth A. and Tringe, Joseph W. and Lee, Jonathan R. I. and Springer, H. Keo and Ilavsky, Jan},
abstractNote = {HMX-based explosives LX-10 and PBX-9501 were heated through the β-δ phase transition. Ultra-small angle x-ray scattering (USAXS) and molecular diffraction were simultaneously recorded as the HMX was heated. Mesoscale voids and structure dramatically change promptly with the β-δ phase transition, rather than with other thermal effects. Also, x-ray induced damage, observed in the USAXS, occurs more readily at elevated temperatures; as such, the dose was reduced to mitigate this effect. Optical microscopy performed during a similar heating cycle gives an indication of changes on longer length scales, while x-ray microtomography, performed before and after heating, shows the character of extensive microstructural damage resulting from the temperature cycle and solid-state phase transition.},
doi = {10.1063/1.4927614},
journal = {Journal of Applied Physics},
number = 5,
volume = 118,
place = {United States},
year = {2015},
month = {8}
}