Investigation of the benefits of plasma deposition for the additive layer manufacture of Ti-6Al-4V

Show simple item record Martina, Filomeno - Mehnen, Jorn - Williams, Stewart W. - Colegrove, Paul A. - Wang, F. - 2012-07-05T23:00:56Z 2012-07-05T23:00:56Z 2012-07-01T00:00:00Z -
dc.identifier.citation Investigation of the benefits of plasma deposition for the additive layer manufacture of Ti-6Al-4V. Journal of Materials Processing Technology, Volume 212, Issue 6, June 2012, Pages 1377-1386
dc.identifier.issn 0924-0136 -
dc.identifier.uri -
dc.description.abstract With increasing emphasis on sustainability, Additive Layer Manufacturing (ALM) offers significant advantages in terms of reduced buy-to-fly ratios and improved design flexibility. Plasma Wire Deposition is a novel ALM technique in which plasma welding and wire feeding are combined. In the present work, a working envelope for the process using Ti–6Al–4V was developed, and regression models were calculated for Total Wall Width, Effective Wall Width and Layer Height. The Plasma Wire Deposition process is able to produce straight walls of widths up to 17.4 mm giving a maximum effective wall width after machining of 15.9 mm, which is considerably wider than competing processes. In addition, for Ti–6Al–4V the deposition efficiency averages 93% and the maximum deposition rate is 1.8 kg/h. Coarse columnar grains ofβphase grew from the base during deposition, which transformed into a Widmanstätten structure ofαlamellae on cooling. Bands were identified in the deposits, which had a repetitive basket-weave microstructure that varied in size. The strength measured by micro-indentation hardness of 387 HV on average is as much as 12% higher than the substrate. These preliminary results indicate that Plasma Wire Deposition is likely to be a suitable process for the ALM of large aerospace en_UK
dc.language.iso en_UK -
dc.publisher Elsevier Science B.V., Amsterdam. en_UK
dc.rights “NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Materials Processing Technology Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Materials Processing Technology, [VOL 212, ISSUE 6, 11/02/2012, DOI 10.1016/j.jmatprotec.2012.02.002” en_UK
dc.subject Additive layer manufacturing en_UK
dc.subject Shaped metal deposition en_UK
dc.subject plasma welding en_UK
dc.subject plasma wire deposition en_UK
dc.subject D-optimal design en_UK
dc.title Investigation of the benefits of plasma deposition for the additive layer manufacture of Ti-6Al-4V en_UK
dc.type Article -

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