Plasticity and phase transition in ramp-compressed single-crystal zirconium

Non-Equilibrium Molecular Dynamics Simulations have been used to investigate plasticity and phase transition in single-crystal zirconium under ramp compression, with piston maximum velocities ranging from 600 to 1400m. s ^−1 . The zirconium is found to yield via twinning deformation. Then, a direct...

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Main Authors: I Adamou, N Amadou, M A Nassirou Hassan, A Moussa Hassane, A Batouré
Format: Article
Language:English
Published: IOP Publishing 2024-01-01
Series:Journal of Physics Communications
Subjects:
Online Access:https://doi.org/10.1088/2399-6528/ad838f
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author I Adamou
N Amadou
M A Nassirou Hassan
A Moussa Hassane
A Batouré
author_facet I Adamou
N Amadou
M A Nassirou Hassan
A Moussa Hassane
A Batouré
author_sort I Adamou
collection DOAJ
description Non-Equilibrium Molecular Dynamics Simulations have been used to investigate plasticity and phase transition in single-crystal zirconium under ramp compression, with piston maximum velocities ranging from 600 to 1400m. s ^−1 . The zirconium is found to yield via twinning deformation. Then, a direct transition from the α -phase to the high-pressure β -phase is observed, in agreement with recent experimental observations, under picosecond laser compression using ultrafast x-ray diffraction diagnostics. As the maximum ramp velocity is increased from 600 to 1400m. s ^−1 , the onset pressure of the phase transition is found to evolve from 22.6 ± 0.15 to 24.1 ± 0.4 GPa while the increase in the temperature behind the phase transition front varies from 179 ± 6 to 784 ± 48 K. The mechanism of this transition at the atomic level is consistent with the Burgers mechanism. Since the transition occurs after twinning plastic deformation, a sizeable fraction of fcc atoms is observed, which increases as the ramp evolves into a shock wave. These observations are consistent with previous theoretical simulations and experiments and contribute to understanding the response of single-crystal zirconium under dynamic compression.
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spelling doaj-art-4b2f5aee16a54ec4ad2d46c56a8933192025-08-20T02:17:06ZengIOP PublishingJournal of Physics Communications2399-65282024-01-0181010500310.1088/2399-6528/ad838fPlasticity and phase transition in ramp-compressed single-crystal zirconiumI Adamou0N Amadou1https://orcid.org/0000-0001-5559-3788M A Nassirou Hassan2https://orcid.org/0009-0003-3650-9677A Moussa Hassane3A Batouré4Département de Physique, Université Abdou Moumouni de Niamey , BP. 10662, Niamey, NigerDépartement de Physique, Université Abdou Moumouni de Niamey , BP. 10662, Niamey, NigerDépartement de Physique, Université Abdou Moumouni de Niamey , BP. 10662, Niamey, NigerDépartement de Physique, Université Abdou Moumouni de Niamey , BP. 10662, Niamey, NigerDépartement de Physique, Université Abdou Moumouni de Niamey , BP. 10662, Niamey, NigerNon-Equilibrium Molecular Dynamics Simulations have been used to investigate plasticity and phase transition in single-crystal zirconium under ramp compression, with piston maximum velocities ranging from 600 to 1400m. s ^−1 . The zirconium is found to yield via twinning deformation. Then, a direct transition from the α -phase to the high-pressure β -phase is observed, in agreement with recent experimental observations, under picosecond laser compression using ultrafast x-ray diffraction diagnostics. As the maximum ramp velocity is increased from 600 to 1400m. s ^−1 , the onset pressure of the phase transition is found to evolve from 22.6 ± 0.15 to 24.1 ± 0.4 GPa while the increase in the temperature behind the phase transition front varies from 179 ± 6 to 784 ± 48 K. The mechanism of this transition at the atomic level is consistent with the Burgers mechanism. Since the transition occurs after twinning plastic deformation, a sizeable fraction of fcc atoms is observed, which increases as the ramp evolves into a shock wave. These observations are consistent with previous theoretical simulations and experiments and contribute to understanding the response of single-crystal zirconium under dynamic compression.https://doi.org/10.1088/2399-6528/ad838fdynamic compressionMolecular Dynamicsphase transitionplasticityzirconiumtwinning
spellingShingle I Adamou
N Amadou
M A Nassirou Hassan
A Moussa Hassane
A Batouré
Plasticity and phase transition in ramp-compressed single-crystal zirconium
Journal of Physics Communications
dynamic compression
Molecular Dynamics
phase transition
plasticity
zirconium
twinning
title Plasticity and phase transition in ramp-compressed single-crystal zirconium
title_full Plasticity and phase transition in ramp-compressed single-crystal zirconium
title_fullStr Plasticity and phase transition in ramp-compressed single-crystal zirconium
title_full_unstemmed Plasticity and phase transition in ramp-compressed single-crystal zirconium
title_short Plasticity and phase transition in ramp-compressed single-crystal zirconium
title_sort plasticity and phase transition in ramp compressed single crystal zirconium
topic dynamic compression
Molecular Dynamics
phase transition
plasticity
zirconium
twinning
url https://doi.org/10.1088/2399-6528/ad838f
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AT namadou plasticityandphasetransitioninrampcompressedsinglecrystalzirconium
AT manassirouhassan plasticityandphasetransitioninrampcompressedsinglecrystalzirconium
AT amoussahassane plasticityandphasetransitioninrampcompressedsinglecrystalzirconium
AT abatoure plasticityandphasetransitioninrampcompressedsinglecrystalzirconium