Modeling and simulation of strain-induced phase transformations under compression in a diamond anvil cell

dc.contributor.author Levitas, Valery
dc.contributor.author Zarechnyy, Oleg
dc.contributor.department Aerospace Engineering
dc.date 2018-02-13T18:13:11.000
dc.date.accessioned 2020-06-29T22:45:48Z
dc.date.available 2020-06-29T22:45:48Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2010
dc.date.embargo 2013-11-25
dc.date.issued 2010-11-23
dc.description.abstract <p>Strain-induced phase transformations (PTs) under high-pressure differ fundamentally from the pressure-induced PTs under quasihydrostatic conditions. A model and finite-element approach to strain-induced PTs under compression and torsion of a sample in rotational diamond anvil cell are developed. The current paper is devoted to the numerical study of strain-induced PTs under compression in traditional diamond anvils while the accompanying paper [ V. I. Levitas and O. M. Zarechnyy <a href="http://dx.doi.org/10.1103/PhysRevB.82.174124">Phys. Rev. B <strong>82</strong> 174124 (2010)</a>] is concerned with compression and torsion in rotational anvils. Very heterogeneous fields of stress tensor, accumulated plastic strain, and concentration of the high-pressure phase are determined for three ratios of yield strengths of low-pressure and high-pressure phases. PT kinetics depends drastically on the yield strengths ratios. For a stronger high-pressure phase, an increase in strength during PT increases pressure and promotes PT, serving as a positive mechanochemical feedback; however, maximum pressure in a sample is much larger than required for PT. For a weaker high-pressure phase, strong strain and high-pressure phase localization and irregular stress fields are obtained. Various experimentally observed effects are reproduced and interpreted. Obtained results revealed difficulties in experimental characterization of strain-induced PTs and suggested some ways to overcome them.</p>
dc.description.comments <p>This article is from <em>Physical Review B</em> 82 (2010): 174123, doi:<a href="http://dx.doi.org/10.1103/PhysRevB.82.174123" target="_blank">10.1103/PhysRevB.82.174123</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/aere_pubs/22/
dc.identifier.articleid 1024
dc.identifier.contextkey 4854628
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath aere_pubs/22
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/2020
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/aere_pubs/22/0-2010_LevitasVI_ModelingSimulationStrainInducedDiamond_Suppleme.pdf|||Fri Jan 14 22:39:57 UTC 2022
dc.source.bitstream archive/lib.dr.iastate.edu/aere_pubs/22/2010_LevitasVI_ModelingSimulationStrainInducedDiamond.pdf|||Fri Jan 14 22:39:59 UTC 2022
dc.source.uri 10.1103/PhysRevB.82.174123
dc.subject.disciplines Aerospace Engineering
dc.subject.disciplines Materials Science and Engineering
dc.subject.disciplines Mechanical Engineering
dc.subject.keywords Mechanical Engineering
dc.subject.keywords Materials Science and Engineering
dc.supplemental.bitstream 2010_LevitasVI_ModelingSimulationStrainInducedDiamond_SupplementaryMaterial.pdf
dc.title Modeling and simulation of strain-induced phase transformations under compression in a diamond anvil cell
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 850871e3-115a-428e-82cc-cbfafef5cf66
relation.isOrgUnitOfPublication 047b23ca-7bd7-4194-b084-c4181d33d95d
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