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Title: Twinning and Dislocation Evolution during Shock Compression and Release of Single Crystals: Real-Time X-Ray Diffraction

Journal Article · · Physical Review Letters

Determining the temporal evolution of twinning and/or dislocation slip, in real time (nanoseconds), in single crystals subjected to plane shock wave loading is a long-standing scientific need. Non-cubic crystals pose special challenges because they have many competing slip and twinning systems. Here, we report on time-resolved, in situ, synchrotron Laue x-ray diffraction measurements during shock compression and release of magnesium single crystals that are subjected to compression along the c-axis. Significant twinning was observed directly during stress release following shock compression; during compression, only dislocation slip was observed. Our measurements unambiguously distinguish between twinning and dislocation slip on nanosecond timescales in a shocked hexagonal-close-packed metal.

Research Organization:
Washington State Univ., Pullman, WA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0002442; NA0002007; AC02-06CH11357
OSTI ID:
1464950
Alternate ID(s):
OSTI ID: 1457823; OSTI ID: 1476639
Journal Information:
Physical Review Letters, Vol. 120, Issue 26; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 49 works
Citation information provided by
Web of Science

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Cited By (13)

Challenges to model the role of heterogeneities on the shock response and spall failure of metallic materials at the mesoscales journal December 2019
Laser-Driven Flyers and Nanosecond-Resolved Velocimetry for Spall Studies in Thin Metal Foils journal May 2019
Dynamic Strength of AZ31B-4E and AMX602 Magnesium Alloys Under Shock Loading journal January 2020
A Brief Review of Spall Failure in Pure and Alloyed Magnesium journal January 2020
Microstructural deformation process of shock-compressed polycrystalline aluminum journal May 2019
Unraveling the Role of Interfaces on the Spall Failure of Cu/Ta Multilayered Systems journal January 2020
Microstructural evolution of single-crystal magnesium under elevated temperature and ultra-high strain rate journal June 2019
Shock compression/release of magnesium single crystals along a low-symmetry orientation: Role of basal slip journal September 2019
Violation of centrosymmetry in time-resolved coherent x-ray diffraction from rovibrational states of diatomic molecules journal March 2019
Amorphous structure in single-crystal magnesium under compression along the c axis with ultrahigh strain rate journal December 2019
Real-Time Observation of Stacking Faults in Gold Shock Compressed to 150 GPa journal January 2020
Atomistic Study of the Role of Defects on α → ϵ Phase Transformations in Iron under Hydrostatic Compression journal September 2019
Computational Analysis Methods in Atomistic Modeling of Crystals journal December 2013

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