Modelling of the workpiece geometry effects on Ti–6Al–4V linear friction welds

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dc.contributor.authorMcAndrew, Anthony
dc.contributor.authorColegrove, Paul A.
dc.contributor.authorAddison, Adrian C.
dc.contributor.authorFlipo, Bertrand C. D.
dc.contributor.authorRussell, Michael J.
dc.contributor.authorLee, Lucie Alexandra
dc.date.accessioned2015-11-26T15:29:47Z
dc.date.available2015-11-26T15:29:47Z
dc.date.issued2015-12-15
dc.description.abstractLinear friction welding (LFW) is a solid-state joining process that is finding increasing interest from industry for the fabrication of titanium alloy (Ti–6Al–4V) preforms. Currently, the effects of the workpiece geometry on the thermal fields, material flow and interface contaminant removal during processing are not fully understood. To address this problem, two-dimensional (2D) computational models were developed using the finite element analysis (FEA) software DEFORM and validated with experiments. A key finding was that the width of the workpieces in the direction of oscillation (in-plane width) had a much greater effect on the experimental weld outputs than the cross-sectional area. According to the validated models, a decrease of the in-plane width increased the burn-off rate whilst decreasing the interface temperature, TMAZ thickness and the burn-off required to remove the interface contaminants from the weld into the flash. Furthermore, the experimental weld interface consisted of a Widmanstätten microstructure, which became finer as the in-plane width was reduced. These findings have significant, practical benefits and may aid industrialisation of the LFW process.en_UK
dc.description.sponsorshipThe authors would like to thank the Engineering and Physical Sciences Research Council (EPSRC), The Boeing Company and The Welding Institute (TWI) for funding the research presented in this paper.en_UK
dc.identifier.citationMcAndrew AR, Colegrove PA, Addison AC, Flipo BCD, Russell MJ, Lee LA. Modelling of the workpiece geometry effects on Ti–6Al–4V linear friction welds. Materials & Design. Volume 87, 15 December 2015, Pages 1087–1099en_UK
dc.identifier.issn0261-3069
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/9595
dc.identifier.urihttp://dx.doi.org/10.1016/j.matdes.2015.09.080
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.
dc.titleModelling of the workpiece geometry effects on Ti–6Al–4V linear friction weldsen_UK
dc.typeArticleen_UK

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