Improving mechanical properties of wire + arc additively manufactured maraging steel through plastic deformation enhanced aging response

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dc.contributor.authorXu, Xiangfang
dc.contributor.authorGanguly, Supriyo
dc.contributor.authorDing, Jialuo
dc.contributor.authorPhilip, Dirisu
dc.contributor.authorMartina, Filomeno
dc.contributor.authorLiu, Xianwei
dc.contributor.authorWilliams, Stewart W.
dc.date.accessioned2019-01-15T16:51:51Z
dc.date.available2019-01-15T16:51:51Z
dc.date.issued2018-12-28
dc.description.abstractMaraging steel gains ultrahigh strength through aging; however, wire + arc additively manufactured maraging steel features a columnar-dendritic structure with associated segregation and shows a much less pronounced aging response. In this paper, plastic deformation was introduced through interpass cold rolling during the layer-by-layer deposition process. After aging, mechanical testing showed a substantial strength improvement from 1410MPa (unrolled) to 1750MPa (50kN rolled). Rolling induced partial recrystallisation to break the dendritic structure and form high-angle grain boundaries, which promoted the atoms diffusion to enable a more uniform solutionizing process and improved the subsequent aging response by 105-110%. The main contribution of overall strengthening of the rolled alloy was attributed to the effective aging process, accounting for more than 95% of the entire strength increase.en_UK
dc.identifier.citationXu X, Ganguly S, Ding J, et al., Improving mechanical properties of wire + arc additively manufactured maraging steel through plastic deformation enhanced aging response. Materials Science and Engineering A: Structural Materials, Volume 747, February 2019, pp. 111-118en_UK
dc.identifier.issn0921-5093
dc.identifier.urihttps://doi.org/10.1016/j.msea.2018.12.114
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/13824
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.subjectwire + arc additive manufactureen_UK
dc.subjectplastic deformationen_UK
dc.subjectmaraging steelen_UK
dc.subjectdislocation densityen_UK
dc.subjectage hardeningen_UK
dc.titleImproving mechanical properties of wire + arc additively manufactured maraging steel through plastic deformation enhanced aging responseen_UK
dc.typeArticleen_UK

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