Quantification of strain fields and grain refinement in Ti-6Al-4V inter-pass rolled wire-arc AM by EBSD misorientation analysis

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dc.contributor.authorDavis, Alec E.
dc.contributor.authorHönnige, J. R.
dc.contributor.authorMartina, Filomeno
dc.contributor.authorPrangnell, P. B.
dc.date.accessioned2021-02-09T15:35:17Z
dc.date.available2021-02-09T15:35:17Z
dc.date.issued2020-09-25
dc.description.abstractInter-pass deformation is an effective method for refining the coarse β-grain structure normally produced in high-deposition-rate additive manufacturing processes, like wire-arc additive manufacturing. The effectiveness of applying contoured surface rolling deformation tracks to each added layer has been studied by developing, and applying, a large-area SEM-based strain mapping technique. This technique is based on calibration of the average point-to-point Local Average Misorientation (LAM) of α-phase lamellar variants in EBSD orientation data to the local effective plastic strain. Although limited in the strain range that can be measured, the technique has proven to be very effective for identifying the size and depth of the plastic zone induced by surface rolling, as well as the local strain distribution, up to a saturation limit of ~12%. The strain fields mapped showed a close correlation to the region and level of recrystallization that occurred in the deformation zones during rapid re-heating through the β transus. The β recrystallization identified was consistent with the local strain distribution within the plastic zones measured by the LAM method and previous work on the recrystallization mechanisms operating in WAAM inter-pass deformation processes.en_UK
dc.identifier.citationDavis AE, Honnige JR, Martina F, Prangnell PB. (2020) Quantification of strain fields and grain refinement in Ti-6Al-4V inter-pass rolled wire-arc AM by EBSD misorientation analysis. Materials Characterization, Volume 170, December 2020, Article number 110673en_UK
dc.identifier.issn1044-5803
dc.identifier.urihttps://doi.org/10.1016/j.matchar.2020.110673
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16316
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectTitaniumen_UK
dc.subjectDeformationen_UK
dc.subjectElectron backscatter diffractionen_UK
dc.subjectAdditive manufacturingen_UK
dc.titleQuantification of strain fields and grain refinement in Ti-6Al-4V inter-pass rolled wire-arc AM by EBSD misorientation analysisen_UK
dc.typeArticleen_UK

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