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Meeting 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Symposium 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Presentation Title Influence of Compositional Gradient Steps on Tensile Properties of Ti-6Al-4V and C103 Functionally Graded Materials via Laser Powder Direct Energy Deposition (LP-DED)
Author(s) Jesus F. De Haro Ruiz, Kurtis I. Watanabe, Diego A. Ariza, Clara M. Hofmeister Mock, Lawrence E. Murr, Brandon McWilliams, James P. Carney, Francisco Medina
On-Site Speaker (Planned) Jesus F. De Haro Ruiz
Abstract Scope Multimaterial additive manufacturing allows combining dissimilar alloys into a single component. offering new possibilities for high-temperature and multifunctional structures. This study aims to investigate the mechanical properties of a functionally graded material composed of C103 refractory alloy and Ti-6Al-4V alpha-beta titanium alloy—both known for their high specific strength, suitable for aerospace and automotive applications. Using Laser Powder Direct Energy Deposition (LP-DED), five box-shaped thin-wall geometries were manufactured with three distinct material configurations: uniform Ti-6Al-4V at the top and bottom, and a center with five gradual transitions from 100 wt% C103 to 100 wt% Ti-6Al-4V in 25-wt% steps. Uniaxial tensile testing assessed strength and elongation based on geometric surface structure. SEM was used to characterize fracture surfaces and identify failure features, correlating fracture behavior to multilateral interfaces. Results indicated increased stress and reduced elongation as the gradient shifted toward Ti-6Al-4V. The impact of this work will be discussed in detail.
Proceedings Inclusion? Undecided

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