Neutron diffraction analysis of stress and strain partitioning in a two-phase microstructure with parallel-aligned phases

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dc.contributor.authorHuang, QLen_AU
dc.contributor.authorShi, Ren_AU
dc.contributor.authorMuránsky, Oen_AU
dc.contributor.authorBeladi, Hen_AU
dc.contributor.authorKabra, Sen_AU
dc.contributor.authorSchimpf, Cen_AU
dc.contributor.authorVolkova, OSen_AU
dc.contributor.authorBiermann, Hen_AU
dc.contributor.authorMola, Jen_AU
dc.date.accessioned2023-04-28T03:28:52Zen_AU
dc.date.available2023-04-28T03:28:52Zen_AU
dc.date.issued2020-08-11en_AU
dc.date.statistics2023-01-23en_AU
dc.descriptionOpen Access. This article is licensed under a Creative Commons Attribution 4.0 International License.en_AU
dc.description.abstractBy time-of-flight (TOF) neutron diffraction experiments, the influence of segregation-induced microstructure bands of austenite (γ) and martensite (α′ ) phases on the partitioning of stress and strain between these phases was investigated. Initially, tensile specimens of a Co-added stainless steel were heat treated by quenching and partitioning (Q&P) processing. Tensile specimens were subsequently loaded at 350 °C parallel to the length of the bands within the apparent elastic limit of the phase mixture. Lattice parameters in both axial and transverse directions were simultaneously measured for both phases. The observation of a lattice expansion for the γ phase in the transverse direction indicated a constraint on the free transverse straining of γ arising from the banded microstructure. The lateral contraction of α′ imposed an interphase tensile microstress in the transverse direction of the γ phase. The multiaxial stress state developed in the γ phase resulted in a large deviation from the level of plastic strain expected for uniaxial loading of single phase γ. Since segregation-induced banded microstructures commonly occur in many engineering alloys, the analysis of stress and strain partitioning with the present Q&P steel can be used to interpret the observations made for further engineering alloys with two-phase microstructures. © 2020 The Author(s)en_AU
dc.description.sponsorshipThe financial support of German Research Foundation (DFG) under grant number MO 2580/1-2 is gratefully acknowledged. Open access funding provided by Projekt DEAL.en_AU
dc.identifier.citationHuang, Q., Shi, R., Muránsky, O., Beladi, H., Kabra, S., Schimpf, C., Volkova, O., Biermann, H. & Mola, J. (2020). Neutron diffraction analysis of stress and strain partitioning in a two-phase microstructure with parallel-aligned phases. Scientific reports, 10(1), 1-12. doi:10.1038/s41598-020-70299-1en_AU
dc.identifier.issn2045-2322en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleScientific reportsen_AU
dc.identifier.pagination45261en_AU
dc.identifier.urihttps://doi.org/10.1038/s41598-020-70299-1en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14931en_AU
dc.identifier.volume10en_AU
dc.language.isoenen_AU
dc.publisherSpringer Natureen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectStressesen_AU
dc.subjectStrainsen_AU
dc.subjectMicrostructureen_AU
dc.subjectMechanical propertiesen_AU
dc.subjectAlloysen_AU
dc.subjectMetalsen_AU
dc.subjectAlignmenten_AU
dc.titleNeutron diffraction analysis of stress and strain partitioning in a two-phase microstructure with parallel-aligned phasesen_AU
dc.typeJournal Articleen_AU
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