Constant plane shift model: Structure analysis of martensitic phases in Ni50Mn27Ga22Fe1 beyond non-modulated building blocks

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dc.contributor.authorVinogradova, Mariiacs
dc.contributor.authorSozinov, Alexeics
dc.contributor.authorStraka, Ladislavcs
dc.contributor.authorVeřtát, Petrcs
dc.contributor.authorHeczko, Olegcs
dc.contributor.authorZelený, Martincs
dc.contributor.authorChulist, Robertcs
dc.contributor.authorLähderanta, Erkkics
dc.contributor.authorUllakko, Karics
dc.coverage.issue1cs
dc.coverage.volume255cs
dc.date.accessioned2024-02-14T12:45:35Z
dc.date.available2024-02-14T12:45:35Z
dc.date.issued2023-05-30cs
dc.description.abstractMartensites of Ni-Mn-Ga-based alloys consist of hierarchical twinning domains spanning from micro-to nanoscale. This affects the diffraction pattern and thus can decrease the accuracy of the determination of the crystal structure. We propose a method to obtain different martensitic phases in Ni-Mn-Ga-Fe alloy with simplified variant microstructures and domain sizes of more than 2 micrometers. The use of simplified variant microstructures allows the influence of nanometer-scale domains on diffraction line position to be circumvented and enabls the comparison of the lattice parameters of non-modulated (NM), five-layered modulated (10M), and seven-layered (14M) phases in the same temperature range due to the large hysteresis of the intermartensitic transformations. It is found that the short crystallo-graphic axes in NM, 14M, and 10M martensites at the same temperature have different lengths. As a result, equilibrium NM structure building blocks cannot be used to build the crystal structures of 14M and 10M martensites. Instead, we introduce a constant plane shift model with identical shift values of the nearest planes (110) along [(1) over bar 10] or [1 (1) over bar0] as a replacement for the tetragonal building blocks model. The work demonstrates that plane shift values differ dramatically between mar-tensites, which agrees with ab initio calculations. The application of the constant plane shift and hard sphere models in modulated lattices for atomic-level twinning considerations is discussed.en
dc.formattextcs
dc.format.extent1-11cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationACTA MATERIALIA. 2023, vol. 255, issue 1, p. 1-11.en
dc.identifier.doi10.1016/j.actamat.2023.119042cs
dc.identifier.issn1873-2453cs
dc.identifier.orcid0000-0001-6715-4088cs
dc.identifier.other184356cs
dc.identifier.researcheridC-5602-2013cs
dc.identifier.scopus57076741200cs
dc.identifier.urihttps://hdl.handle.net/11012/244955
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofACTA MATERIALIAcs
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S1359645423003737cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1873-2453/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectmartensiteen
dc.subjectcrystal-structureen
dc.subjecttemperature-dependenceen
dc.subjectsymmetryen
dc.subjecttransformationen
dc.titleConstant plane shift model: Structure analysis of martensitic phases in Ni50Mn27Ga22Fe1 beyond non-modulated building blocksen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-184356en
sync.item.dbtypeVAVen
sync.item.insts2024.02.14 13:45:35en
sync.item.modts2024.02.14 13:13:52en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav materiálových věd a inženýrstvícs
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