Davis, Alec E.Caballero, ArmandoPrangnell, Philip B.2020-10-282020-10-282020-08-13Davis AE, Caballero A, Prangnell PB. (2020) Confirmation of rapid-heating β recrystallization in wire-arc additively manufactured Ti-6Al-4V. Materialia, Volume 13, September 2020, Article number 1008572589-1529https://doi.org/10.1016/j.mtla.2020.100857https://dspace.lib.cranfield.ac.uk/handle/1826/15928The coarse columnar β grains in Ti-6Al-4V WAAM can be refined by relatively low strain inter-pass deformation. Simulation, with rapid heating, has shown this may partly occur by a novel recrystallization mechanism that involves twinning during β regrowth through the α-β transus, as a result of the prior deformation promoting faults in the α-β interface, which produces a unique micro-texture in each parent β grain. Here, this potential mechanism has been investigated further, using a different deformation mode – uniaxial tensile deformation rather than plane strain compression – to enable the texture contribution from conventional recrystallization to be more unambiguously discriminated. The tensile-deformed samples are shown to produce the same unusual unique micro-texture seen previously, at low strains, despite the different deformation mode, but this disappeared at higher strains, which provides more evidence in support of this new rapid heating β recrystallization mechanismenAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/Electron backscattering diffraction (EBSD)Recrystallization texturePlastic deformationGrain refiningTitaniumArticle