Oxide accumulation effects on wire + arc layer-by-layer additive manufacture process

dc.contributor.authorXu, Xiangfang
dc.contributor.authorDing, Jialuo
dc.contributor.authorGanguly, Supriyo
dc.contributor.authorDiao, Chenglei
dc.contributor.authorWilliams, Stewart W.
dc.date.accessioned2017-12-20T15:17:14Z
dc.date.available2017-12-20T15:17:14Z
dc.date.issued2017-10-20
dc.description.abstractA maraging steel wall structure was built layer-by-layer to study oxide accumulation mechanisms and the influence of oxides on the subsequent deposition. An online arc welding camera was also applied to investigate the wetting and spreading behaviour of the deposition on different surface conditions. Two maraging steel walls were deposited under torch shielding only and torch plus tent shielding conditions respectively to study the effect of oxides on the mechanical properties. Upon deposition a mixture of Fe, Al and Ti oxides formed, floated to the weld pool surface and accumulated layer by layer, deteriorating the surface condition such that it was rough and porous, which adversely affected the stability of arc and the wetting and spreading process of the weld pool in subsequent layers. The accumulation of oxides added to the uncertainty of the layer dimension and worsened the surface finish to reduce the structural integrity. Despite that the majority of the oxides floated to the weld pool surface, oxides (up to a few hundred nanometers in diameter) were found to be dispersed in the additively manufactured structure and might be one of the strengthening sources resulting in a 11% increase in UTS and a 19% decrease in elongation compared to the structure built in the torch plus tent shielding condition.en_UK
dc.identifier.citationXu X, Ding J, Ganguly S, Diao C, Williams S, Oxide accumulation effects on wire + arc layer-by-layer additive manufacture process. Journal of Materials Processing Technology, Volume 252, February 2018, pp. 739-750en_UK
dc.identifier.cris19035596
dc.identifier.issn0924-0136
dc.identifier.urihttp://dx.doi.org/10.1016/j.jmatprotec.2017.10.030
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/12807
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rightsAttribution-Non-Commercial-No Derivatives 4.0 (CC BY-NC-ND 4.0). You are free to: Share — copy and redistribute the material in any medium or format. The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms: Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Information: Non-Commercial — You may not use the material for commercial purposes. No Derivatives — If you remix, transform, or build upon the material, you may not distribute the modified material. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectWire + arc additive manufactureen_UK
dc.subjectOxides accumulationen_UK
dc.subjectWetting and spreadingen_UK
dc.subjectMaraging steelen_UK
dc.titleOxide accumulation effects on wire + arc layer-by-layer additive manufacture processen_UK
dc.typeArticleen_UK

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