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Title: Examination of the α-ω two-phase shock-induced microstructure in zirconium and titanium

Abstract

Omega (ω) phase is formed in alpha (α) zirconium during dynamic loading and can be retained in the recovered material. The pathway for the α to ω change (or the reverse transformation) is not well understood. Zirconium was shock-loaded and the resulting two-phase microstructure was examined. Electron backscatter diffraction (EBSD) was used to characterize the orientation relationships and habit planes between phases to understand the pathways between α and ω phases and compare to Molecular Dynamics (MD) simulations. Based on key microstructural features, a significant amount of α phase appears to have originated from the reverse transformation from ω-Zr on unloading. Results of microstructural analysis will be discussed, along with implications toward phase transformation pathways.

Authors:
ORCiD logo [1];  [2];  [3];  [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. of New South Wales, Sydney, NSW (Australia)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Colorado School of Mines, Golden, CO (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1544754
Report Number(s):
LA-UR-15-26063
Journal ID: ISSN 0094-243X
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1793; Journal Issue: 1; Conference: SHOCK COMPRESSION OF CONDENSED MATTER, Tampa Bay, FL (US), 14 Jun - 19 Jun 2015; Journal ID: ISSN 0094-243X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 97 MATHEMATICS AND COMPUTING; zirconium, alpha, omega, shock, dynamic loading, titanium

Citation Formats

Morrow, Benjamin M., Escobedo, J. Pablo, Field, Robert D., Dickerson, Robert M., Dickerson, Patricia O., Trujillo, Carl P., and Cerreta, Ellen K.. Examination of the α-ω two-phase shock-induced microstructure in zirconium and titanium. United States: N. p., 2017. Web. https://doi.org/10.1063/1.4971658.
Morrow, Benjamin M., Escobedo, J. Pablo, Field, Robert D., Dickerson, Robert M., Dickerson, Patricia O., Trujillo, Carl P., & Cerreta, Ellen K.. Examination of the α-ω two-phase shock-induced microstructure in zirconium and titanium. United States. https://doi.org/10.1063/1.4971658
Morrow, Benjamin M., Escobedo, J. Pablo, Field, Robert D., Dickerson, Robert M., Dickerson, Patricia O., Trujillo, Carl P., and Cerreta, Ellen K.. Fri . "Examination of the α-ω two-phase shock-induced microstructure in zirconium and titanium". United States. https://doi.org/10.1063/1.4971658. https://www.osti.gov/servlets/purl/1544754.
@article{osti_1544754,
title = {Examination of the α-ω two-phase shock-induced microstructure in zirconium and titanium},
author = {Morrow, Benjamin M. and Escobedo, J. Pablo and Field, Robert D. and Dickerson, Robert M. and Dickerson, Patricia O. and Trujillo, Carl P. and Cerreta, Ellen K.},
abstractNote = {Omega (ω) phase is formed in alpha (α) zirconium during dynamic loading and can be retained in the recovered material. The pathway for the α to ω change (or the reverse transformation) is not well understood. Zirconium was shock-loaded and the resulting two-phase microstructure was examined. Electron backscatter diffraction (EBSD) was used to characterize the orientation relationships and habit planes between phases to understand the pathways between α and ω phases and compare to Molecular Dynamics (MD) simulations. Based on key microstructural features, a significant amount of α phase appears to have originated from the reverse transformation from ω-Zr on unloading. Results of microstructural analysis will be discussed, along with implications toward phase transformation pathways.},
doi = {10.1063/1.4971658},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1793,
place = {United States},
year = {2017},
month = {1}
}

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Works referenced in this record:

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