The effectiveness of combining rolling deformation with wire-arc additive manufacture on β-Grain refinement and texture modification in Ti-6Al-4V

Simple item page
dc.contributor.authorDonoghue, J.
dc.contributor.authorAnthonysamy, A. A.
dc.contributor.authorMartina, Filomeno
dc.contributor.authorColegrove, Paul A.
dc.contributor.authorWilliams, Stewart W.
dc.contributor.authorPrangnell, P. B.
dc.date.accessioned2016-08-18T18:26:59Z
dc.date.available2016-08-18T18:26:59Z
dc.date.issued2016-02-08
dc.description.abstractIn Additive Manufacture (AM), with the widely used titanium alloy Ti–6Al–4V, the solidification conditions typically result in undesirable, coarse-columnar, primary β grain structures. This can result in a strong texture and mechanical anisotropy in AM components. Here, we have investigated the efficacy of a new approach to promote β grain refinement in Wire–Arc Additive Manufacture (WAAM) of large scale parts, which combines a rolling step sequentially with layer deposition. It has been found that when applied in-process, to each added layer, only a surprisingly low level of deformation is required to greatly reduce the β grain size. From EBSD analysis of the rolling strain distribution in each layer and reconstruction of the prior β grain structure, it has been demonstrated that the normally coarse centimetre scale columnar β grain structure could be refined down to < 100 μm. Moreover, in the process both the β and α phase textures were substantially weakened to close to random. It is postulated that the deformation step causes new β orientations to develop, through local heterogeneities in the deformation structure, which act as nuclei during the α → β transformation that occurs as each layer is re-heated by the subsequent deposition pass.en_UK
dc.identifier.citationDonoghue J, Antonymy AA, Martina F, et al., (2016) The effectiveness of combining rolling deformation with Wire–Arc Additive Manufacture on β-grain refinement and texture modification in Ti–6Al–4. Materials Characterization, Volume 114, April 2016, pp. 103-114en_UK
dc.identifier.cris5691736
dc.identifier.issn1044-5803
dc.identifier.urihttp://dx.doi.org/10.1016/j.matchar.2016.02.001.
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/10349
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International (CC BY 4.0) You are free to: Share — copy and redistribute the material in any medium or format, Adapt — remix, transform, and build upon the material for any purpose, even commercially. 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: No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.en_UK
dc.subjectAdditive Manufactureen_UK
dc.subjectTitaniumen_UK
dc.subjectGrain structureen_UK
dc.subjectTextureen_UK
dc.titleThe effectiveness of combining rolling deformation with wire-arc additive manufacture on β-Grain refinement and texture modification in Ti-6Al-4Ven_UK
dc.typeArticleen_UK

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
The_effectiveness_of_combining_rolling_deformation_with_wire-arc_additive_manufacture_on_β-Grain_refinement_and_texture_modification_in_Ti-6Al-4V_2016.pdf
Size:
4.03 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.79 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Staff publications (SATM)