by Wessel Wits and Juan Jauregui Becker
Abstract
In this paper the joinability of titanium Additive Manufactured (AM) parts is explored. Keyhole welding, using a pulsed laser beam, of conventionally produced parts is compared to AM parts. Metal AM parts are notorious for having remaining porosities and other non-isotropic properties due to the layered manufacturing process. This study shows that due to these deficiencies more energy per unit weld length is required to obtain a similar keyhole geometry for titanium AM parts. It is also demonstrated that, with adjusted laser process parameters, good quality welds for aerospace applications in terms of pressure resistance and leak tightness are achievable.
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Did you do any mechanical tests on the welds? If so, what was the outcome?
How were the welded surfaces prepared? Did you preform any pre-processing?
Is fatigue an important parameter for the considered application? Were there any fatigue testing?