Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 674, Issue -, Pages 428-437Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2016.07.038
Keywords
Titanium alloys; Additive manufacturing; Mechanical properties; Microstructure; Laser metal wire deposition
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Funding
- Graduate School of Space Technology
- NFFP (the National Aviation Engineering Research Program) in Sweden
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In the present paper laser metal wire deposition of Ti-6Al-4V has been studied and the mechanical properties evaluated. The yield strength, ultimate tensile strength and tensile elongation were all found to depend on the orientation of the specimens with respect to the deposition direction. Two orientations in the deposited material were evaluated in the study, perpendicular and parallel to the deposition direction. The specimens in the perpendicular orientation showed 25-33% higher elongation than the specimens parallel to the deposition direction. The parallel specimens on the other hand showed both higher (4%) ultimate tensile strength and higher (2-5%) yield strength. Furthermore, the anisotropic mechanical properties were correlated to the microstructural constituents of the specimens. (C) 2016 Elsevier B.V. All rights reserved.
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