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dc.contributor.authorZhao, Pengyang
dc.contributor.authorShen, Chen
dc.contributor.authorLi, Ju
dc.contributor.authorWang, Yunzhi
dc.date.accessioned2018-07-24T14:10:59Z
dc.date.available2018-07-24T14:10:59Z
dc.date.issued2017-05
dc.date.submitted2017-03
dc.identifier.issn2057-3960
dc.identifier.urihttp://hdl.handle.net/1721.1/117063
dc.description.abstractThe phase-field microelasticity theory has exhibited great capacities in studying elasticity and its effects on microstructure evolution due to various structural and chemical non-uniformities (impurities and defects) in solids. However, the usually adopted linear and/or collinear coupling between eigen transformation strain tensors and order parameters in phase-field microelasticity have excluded many nonlinear transformation pathways that have been revealed in many atomistic calculations. Here we extend phase-field microelasticity by adopting general nonlinear and noncollinear eigen transformation strain paths, which allows for the incorporation of complex transformation pathways and provides a multiscale modeling scheme linking atomistic mechanisms with overall kinetics to better describe solid-state phase transformations. Our case study on a generic cubic to tetragonal martensitic transformation shows that nonlinear transformation pathways can significantly alter the nucleation and growth rates, as well as the configuration and activation energy of the critical nuclei. It is also found that for a pure-shear martensitic transformation, depending on the actual transformation pathway, the nuclei and austenite/martensite interfaces can have nonzero far-field hydrostatic stress and may thus interact with other crystalline defects such as point defects and/or background tension/compression field in a more profound way than what is expected from a linear transformation pathway. Further significance is discussed on the implication of vacancy clustering at austenite/martensite interfaces and segregation at coherent precipitate/matrix interfaces.en_US
dc.description.sponsorshipNational Science Foundation (U.S.). Division of Materials Research (DMR-1410322)en_US
dc.description.sponsorshipNational Science Foundation (U.S.). Division of Materials Research (DMR-1410636)en_US
dc.publisherSpringer Natureen_US
dc.relation.isversionofhttp://dx.doi.org/10.1038/S41524-017-0022-2en_US
dc.rightsCreative Commons Attribution 4.0 International Licenseen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceNatureen_US
dc.titleEffect of nonlinear and noncollinear transformation strain pathways in phase-field modeling of nucleation and growth during martensite transformationen_US
dc.typeArticleen_US
dc.identifier.citationZhao, Pengyang, Chen Shen, Ju Li, and Yunzhi Wang. “Effect of Nonlinear and Noncollinear Transformation Strain Pathways in Phase-Field Modeling of Nucleation and Growth During Martensite Transformation.” Npj Computational Materials 3, no. 1 (May 10, 2017).en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Mechanical Engineeringen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Nuclear Science and Engineeringen_US
dc.contributor.mitauthorLi, Ju
dc.contributor.mitauthorWang, Yunzhi
dc.relation.journalnpj Computational Materialsen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2018-07-23T15:29:32Z
dspace.orderedauthorsZhao, Pengyang; Shen, Chen; Li, Ju; Wang, Yunzhien_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-7841-8058
mit.licensePUBLISHER_CCen_US


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