Direct Metal Deposition of Functional Graded Structures in Ti- Al System

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Abstract

A direct laser metal deposition (DLMD) technology with co-axial powder injection is used to fabricate a complex functional graded structure (FGS) fabrication. The aim of the study is to demonstrate the possibility to produce intermetallic phases in the Ti-Al powder systems in the course of a single-step DMD process. Besides, relationships between the main laser cladding parameters and the intermetallic phase structures of the built-up objects have been studied. In our research we applied the optical microscopy, X-ray analysis, microhardness measurement and SEM with EDX analysis of the laser-fabricated intermetallics. The discussion of the mechanisms of Ti x Al y (x,y = 1.3) intermetallic transformations in exothermal reactions is also offered in the report.

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Shishkovsky, I., Missemer, F., & Smurov, I. (2012). Direct Metal Deposition of Functional Graded Structures in Ti- Al System. In Physics Procedia (Vol. 39, pp. 382–391). Elsevier B.V. https://doi.org/10.1016/j.phpro.2012.10.052

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