Impact of contour on surface quality, dimensional and geometrical accuracy of Ti48Al2Cr2Nb parts produced with powder bed fusion with electron beam process
Giovanni RIZZA, Manuela GALATI, Paolo MINETOLA, Paolo ANTONIONI, Danilo BRUSON, Giovanni MARCHIANDI, Luca IULIANO
Abstract. Powder bed fusion with electron beam (PBF-EB) is an additive manufacturing technique for processing critical materials such as Ti48Al2Cr2Nb. Most of these applications are focused on industrial components that require mirror-like finishing. Therefore, PBF-EB parts are considered only near net shape. The PBF-EB standard procedure involves melting using contours before the inner area. However, because of the need for machining allowance, using contours appears unnecessary, while it may increase the production time significantly. This work highlights the differences between Ti48Al2Cr2Nb parts produced using the standard procedure of PBF-EB and a counterpart produced with a modified single-stage melting. Surface topography, dimensional and geometrical accuracies and mechanical properties are compared. The results show that the parts produced with a single-stage melting are more accurate in dimensions than those produced using a standard strategy, while the production time is over 8% shorter.
Keywords
Additive Manufacturing, Metrology and Tolerancing, Surfaces
Published online 9/10/2025, 9 pages
Copyright © 2025 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Giovanni RIZZA, Manuela GALATI, Paolo MINETOLA, Paolo ANTONIONI, Danilo BRUSON, Giovanni MARCHIANDI, Luca IULIANO, Impact of contour on surface quality, dimensional and geometrical accuracy of Ti48Al2Cr2Nb parts produced with powder bed fusion with electron beam process, Materials Research Proceedings, Vol. 57, pp 11-19, 2025
DOI: https://doi.org/10.21741/9781644903735-2
The article was published as article 2 of the book Italian Manufacturing Association Conference
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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