Investigation of residual stresses in titanium aerospace components formed via additive manufacturing

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dc.contributor.authorHoye, Nen_AU
dc.contributor.authorLi, HJen_AU
dc.contributor.authorCuiuri, Den_AU
dc.contributor.authorParadowska, AMen_AU
dc.contributor.authorThorogood, KJen_AU
dc.date.accessioned2021-02-16T01:22:34Zen_AU
dc.date.available2021-02-16T01:22:34Zen_AU
dc.date.issued2014-01-01en_AU
dc.date.statistics2021-02-15en_AU
dc.description.abstractIn the present study gas tungsten arc welding (GTAW) with automated wire addition was used to additively manufacture (AM) a representative thin-walled aerospace component from Ti-6Al-4V in a layer-wise manner. Residual strains, and hence stresses, were analysed quantitatively using neutron diffraction techniques on the KOWARI strain scanner at the OPAL research facility operated by the Australian Nuclear Science and Technology Organisation (ANSTO). Results showed that residual strains within such an AM sample could be measured with relative ease using the neutron diffraction method. Residual stress levels were found to be greatest in the longitudinal direction and concentrated at the interface between the base plate and deposited wall. Difficulties in measurement of lattice strains in some discrete locations within the deposited material were ascribed to the formation of localised grain orientation where α-Ti laths form in aligned colonies within prior β-Ti grain boundaries upon cooling. Neutron diffraction measurements of residual stress were cross-correlated using the contour method with results found to be in close agreement. Observations of microstructure reveal 'basket-weave' morphology typical of fusion welds in Ti-6Al-4V. Microhardness measurements show lower hardness in the deposited material compared to the base plate and a further small decrease in hardness in the top region of the deposit, indicating a dependence on thermal cycling from sequential weld deposition. © 2021 Informiten_AU
dc.identifier.citationHoye, N., Li, H., Cuiuri, D., Paradowska, A., & Thorogood, K. (2014). Investigation of residual stresses in titanium aerospace components formed via additive manufacturing. 8th Australasian Congress on Applied Mechanics, ACAM 2014, Melbourne, Victoria as Part of Engineers Australia Convention 2014, (pp. 933-941). Australia: Engineers Australia. Retrieved from https://search.informit.org/doi/10.3316/informit.194942275719019en_AU
dc.identifier.conferenceenddate26 November 2014en_AU
dc.identifier.conferencename8th Australasian Congress on Applied Mechanics, ACAM 2014, as Part of Engineers Australia Convention 2014en_AU
dc.identifier.conferenceplaceMelbourne, Victoriaen_AU
dc.identifier.conferencestartdate25 November 2014en_AU
dc.identifier.isbn9781922107350en_AU
dc.identifier.pagination933-941en_AU
dc.identifier.urihttps://search.informit.org/doi/10.3316/informit.194942275719019en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10416en_AU
dc.language.isoenen_AU
dc.publisherEngineers Australiaen_AU
dc.subjectAdditivesen_AU
dc.subjectWeldingen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectResidual stressesen_AU
dc.subjectGas tungsten-arc weldingen_AU
dc.subjectMicrohardnessen_AU
dc.subjectStrainsen_AU
dc.subjectGrain boundariesen_AU
dc.subjectOPAL Reactoren_AU
dc.subjectANSTOen_AU
dc.titleInvestigation of residual stresses in titanium aerospace components formed via additive manufacturingen_AU
dc.typeConference Paperen_AU
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