About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
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Symposium
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Additive Manufacturing: Processing, Microstructure and Material Properties of Titanium-based Materials
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Presentation Title |
Comparison of Mechanical Properties for Ti-Ta Vertically and Horizontally Graded Interfaces in Laser Powder Bed Fusion |
Author(s) |
Cherish Lesko, Joseph Walker, John Middendorf, Joy E. Gockel |
On-Site Speaker (Planned) |
Cherish Lesko |
Abstract Scope |
Graded material composition has the ability to adjust the material properties in specific locations towards an improvement in part function. The binary Titanium and Tantalum (Ti-Ta) alloy system is of great interest to many fields of engineering as a result of the unique properties it possesses. However, there remain several challenges in using Ti-Ta alloys for multi-material additive manufacturing (AM), including significantly different thermal behavior. In this work, the mechanical and material characterization of graded interfaces between compositions mixtures of 100% Ti and 52% Ti-48% Ta is explored. The deposition of the material is performed using a custom-built laser powder bed fusion (LPBF) AM machine that allows for both horizontal and vertical compositional grading throughout the powder bed. The ability to grade material composition in multiple directions in LPBF AM provides the capability to fabricate complex geometries with spatially varying functional and structural properties tailored to the desired application. |