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

Morrow, Benjamin M.; Escobedo, J. Pablo; Field, Robert D.; Dickerson, Robert M.; Dickerson, Patricia O.; Trujillo, Carl P.; Cerreta, Ellen K.

doi:10.1063/1.4971658

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

Journal Article · Fri Jan 13 00:00:00 EST 2017 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4971658· OSTI ID:1544754

^[1]; Escobedo, J. Pablo ^[2]; Field, Robert D. ^[3]; Dickerson, Robert M. ^[1]; Dickerson, Patricia O. ^[1]; Trujillo, Carl P. ^[1]; Cerreta, Ellen K. ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of New South Wales, Sydney, NSW (Australia)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Colorado School of Mines, Golden, CO (United States)

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.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1544754

Report Number(s):: LA-UR--15-26063

Journal Information:: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1793; ISSN 0094-243X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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

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References (15)

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