Ghasemi-Tabasi, HosseinLarcher, MargauxN. D.Cayron, CyrilJhabvala, JamaspVan Petegem, StevenKalentics, Nikola E.Boillat, EricLoge, Roland2022-05-232022-05-232022-05-232022-04-0110.1016/j.scriptamat.2021.114490https://infoscience.epfl.ch/handle/20.500.14299/187988WOS:000788063900014Printing gold alloys parts is a challenge due to the high reflectivity and thermal conductivity of these materials. Recent studies show an improvement in printing gold using the Laser Powder Bed Fusion (L-PBF) process; however, the impact of the A1 -> L1(0) phase transformation on printed red-gold alloy has not been studied. In this work, 3D printed red-gold samples with different post-processing conditions have been heat-treated at 250 degrees C to investigate the effect of the sample stress states on variant selection, by Electron Backscatter Diffraction. Synchrotron X-ray diffraction experiments reveal the presence of a non-negligible amount of tetragonal phase in the as-build red-gold samples. The use of an intermediate heat treatment at 600 degrees C to eliminate small domains of tetragonal phase formed during the manufacturing process demonstrates that the crystallographic textures following heat treatment are highly dependent on the stress-state during the early stage of the phase transformation. (C) 2022 The Authors. Published by Elsevier Ltd on behalf of Acta Materialia Inc.Nanoscience & NanotechnologyMaterials Science, MultidisciplinaryMetallurgy & Metallurgical EngineeringScience & Technology - Other TopicsMaterials Sciencelaser powder bed fusion (l-pbf)red-gold alloyvariant selectionelectron backscatter diffraction (ebsd)x-ray diffractionresidual-stresskineticstransformationaucutext::journal::journal article::research article