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Metals 2017, 7(5), 183;

Laser Beam Welding of a Ti–6Al–4V Support Flange for Buy-to-Fly Reduction

Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II 132, Fisciano 84084, Italy
Department of Sustainability, ENEA Casaccia, Via Anguillarese 131, Santa Maria di Galeria 00123, Italy
Department of Aerostructure Technology and Development, Leonardo Company S.p.A., Viale dell’Aeronautica snc, Pomigliano d’Arco 80038, Italy
Author to whom correspondence should be addressed.
Academic Editors: João Pedro Oliveira and Zhi Zeng
Received: 12 April 2017 / Revised: 5 May 2017 / Accepted: 16 May 2017 / Published: 20 May 2017
(This article belongs to the Special Issue Laser Welding)


Titanium and its alloys are increasingly being used in aerospace, although a number of issues must be addressed. Namely, in the framework of welding to produce complex parts, the same mechanical strength and a reduced buy-to-fly ratio are desired in comparison with the same components resulting from machining. To give grounds to actual application of autogenous laser beam welding, Ti–6Al–4V L- and T-joints have been investigated in this paper, as they are a common occurrence in general complex components. Discussions in terms of possible imperfections, microstructure, and microhardness have been conducted. Then, a real part consisting of a support flange for aerospace application has been chosen as a valuable test-article to be compared with its machined counterpart both in terms of strength and buy-to-fly. The feasibility and the effectiveness of the process are shown. View Full-Text
Keywords: laser beam welding; buy-to-fly; L-joint; T-joint; Ti–6Al–4V laser beam welding; buy-to-fly; L-joint; T-joint; Ti–6Al–4V

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Caiazzo, F.; Alfieri, V.; Corrado, G.; Argenio, P.; Barbieri, G.; Acerra, F.; Innaro, V. Laser Beam Welding of a Ti–6Al–4V Support Flange for Buy-to-Fly Reduction. Metals 2017, 7, 183.

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