Enhancing mechanical properties of wire + arc additively manufactured INCONEL 718 superalloy through in-process thermomechanical processing

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dc.contributor.authorXu, Xiangfang
dc.contributor.authorGanguly, Supriyo
dc.contributor.authorDing, Jialuo
dc.contributor.authorSeow, Cui Er
dc.contributor.authorWilliams, Stewart W.
dc.date.accessioned2020-01-15T17:29:54Z
dc.date.available2020-01-15T17:29:54Z
dc.date.issued2018-10-27
dc.description.abstractWire + arc additive manufacture (WAAM) was applied to produce INCONEL 718 superalloy (IN718) components in a layer by layer manner; further, interpass cold rolling was introduced to generate in-process thermomechanical processing effect during the deposition process. Mechanical testing showed that with rolling applied, the strength of the solution plus aging treated WAAM IN718 was improved from 1056 MPa (unrolled) to 1351 MPa (rolled) which met the wrought standard (1276 MPa), and the material anisotropy was eliminated. The unrolled IN718 featured large columnar grains developing along the building direction, with the length and width as large as 11 mm and 0.8 mm respectively; rolling induced plastic deformation triggered a non-uniform recrystallization upon successive depositions, which produced a recrystallized core with small columnar grains and numerous finely equiaxed grains with the grain size of 12.7 μm. The overall strengthening produced by interpass rolling was attributed mostly (76%) to the rolling induced recrystallization which produced grain size reduction strengthening and created larger grain boundary area to allow more precipitation at the grain boundaries, and partially (24%) due to the improved aging response of the recrystallized grain structureen_UK
dc.identifier.citationXu X, Ganguly S, Ding J, et al., (2018) Enhancing mechanical properties of wire + arc additively manufactured INCONEL 718 superalloy through in-process thermomechanical processing. Materials and Design, Volume 160, December 2018, pp.1042-1051en_UK
dc.identifier.issn0264-1275
dc.identifier.urihttps://doi.org/10.1016/j.matdes.2018.10.038
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/14928
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectINCONEL 718en_UK
dc.subjectMechanical propertiesen_UK
dc.subjectWire + arc additive manufactureen_UK
dc.subjectRecrystallizationen_UK
dc.subjectThermomechanical processingen_UK
dc.titleEnhancing mechanical properties of wire + arc additively manufactured INCONEL 718 superalloy through in-process thermomechanical processingen_UK
dc.typeArticleen_UK

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