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Manufacturing of Titanium Components with 3DPMD

Chemnitz University of Technology—Chair of Welding Engineering, Chemnitz D-09126, Germany
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Metals 2019, 9(5), 562; https://doi.org/10.3390/met9050562
Received: 11 April 2019 / Revised: 6 May 2019 / Accepted: 10 May 2019 / Published: 14 May 2019
(This article belongs to the Special Issue Arc-based Additive Manufacturing)
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Abstract

Within this work, the 3D plasma metal deposition (3DPMD) process is introduced as an additive manufacturing process for titanium components. For this purpose, demonstrators were designed, manufactured and subsequently analyzed. Process-structure-property relationships are discussed. By analyzing the microstructure, the chemical composition and the mechanical-technological properties, it is shown that the production of titanium parts with 3DPMD is possible. The micro tensile tests showed that a load parallel to the build direction is the most critical case for the component. Furthermore, a brittle material behavior could be determined due to enhanced oxygen content in the component. By subsequent heat treatment, the brittle failure behavior could be increased to a fracture elongation of 4.6%. In sum, the 3DPMD process has the potential to manufacture near-net-shape titanium parts out of metal powders. Critical issues are the protection of the weldment and the lack of ductility of the titanium component. View Full-Text
Keywords: 3DPMD; additive manufacturing; titanium; powder deposition; plasma transferred arc 3DPMD; additive manufacturing; titanium; powder deposition; plasma transferred arc
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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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Hoefer, K.; Nitsche, A.; Haelsig, A.; Mayr, P. Manufacturing of Titanium Components with 3DPMD. Metals 2019, 9, 562.

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