Anisotropic behaviours of LPBF Hastelloy X under slow strain rate tensile testing at elevated temperature

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dc.contributor.authorYu, CHen_AU
dc.contributor.authorPeng, RLen_AU
dc.contributor.authorLee, TLen_AU
dc.contributor.authorLuzin, Ven_AU
dc.contributor.authorLundgren, JEen_AU
dc.contributor.authorMoverare, Jen_AU
dc.date.accessioned2023-01-31T02:08:43Zen_AU
dc.date.available2023-01-31T02:08:43Zen_AU
dc.date.issued2022-06en_AU
dc.date.statistics2022-05-26en_AU
dc.description.abstractTo improve the understanding of high temperature mechanical behaviours of LPBF Ni-based superalloys, this work investigates the influence of an elongated grain structure and characteristic crystallographic texture on the anisotropic tensile behaviours in LPBF Hastelloy X (HX) at 700 °C. Two types of loading conditions have been examined to analyse the anisotropy related to the building direction (BD), including the vertical loading (loading direction//BD) and the horizontal loading (loading direction ⊥ BD). To probe the short-term creep behaviours, slow strain rate tensile testing (SSRT) has been applied to address the strain rate dependent inelastic strain accumulation. In-situ time-of-flight neutron diffraction upon loading was performed to track the anisotropic lattice strain evolution in the elastic region and the texture evolution in the plastic region. Combined with the post microstructure and fracture analysis, the anisotropic mechanical behaviours are well correlated with the different microstructural responses between vertical and horizontal loading and the different strain rates. A better creep performance is expected in the vertical direction with the consideration of the better ductility and the higher level of texture evolution. © 2022 The Authors. Published by Elsevier B.V. Open access article under the CC BY licence.en_AU
dc.description.sponsorshipThis study was supported by the Swedish Governmental Agency for Innovation Systems (Vinnova grant 2016-05175) and the Centre for Additive Manufacturing-metal (CAM2). Support from AFM at Linköping University and the faculty grant SFO-MATLiU#2009-00971 is also acknowledged. Experiments at the ISIS Neutron and Muon Source were supported by a beamtime allocation RB2010043 from the Science and Technology Facilities Council [44]. All the data in this study are available from the corresponding author on reasonable request.en_AU
dc.identifier.articlenumber143174en_AU
dc.identifier.citationYu, C.-H., Peng, R. L., Lee, T. L., Luzin, V., Lundgren, J.-E., & Moverare, J. (2022). Anisotropic behaviours of LPBF Hastelloy X under slow strain rate tensile testing at elevated temperature. Materials Science and Engineering: A, 844, 143174. doi:10.1016/j.msea.2022.143174en_AU
dc.identifier.issn0921-5093en_AU
dc.identifier.journaltitleMaterials Science and Engineering: Aen_AU
dc.identifier.urihttps://doi.org/10.1016/j.msea.2022.143174en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14578en_AU
dc.identifier.volume844en_AU
dc.language.isoenen_AU
dc.publisherElsevier B. V.en_AU
dc.subjectCreepen_AU
dc.subjectStrain rateen_AU
dc.subjectTextureen_AU
dc.subjectDuctilityen_AU
dc.subjectElasticityen_AU
dc.subjectAnisotropyen_AU
dc.subjectLoadingen_AU
dc.subjectAlloysen_AU
dc.subjectNeutron diffractionen_AU
dc.titleAnisotropic behaviours of LPBF Hastelloy X under slow strain rate tensile testing at elevated temperatureen_AU
dc.typeJournal Articleen_AU
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