About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Design, Materials, Manufacturing, Challenges and Applications
|
| Presentation Title |
Microstructural Characterization and Mechanical Behavior of Ti6Al4V After Hybrid Directed- Energy Deposition (DED) - Wrought Processing |
| Author(s) |
Ananth Balasubramanian, Ayobami Oladipo, Eric Payton |
| On-Site Speaker (Planned) |
Ananth Balasubramanian |
| Abstract Scope |
Hybrid additive manufacturing (AM) combines AM technology with other conventional manufacturing techniques to complement the strengths of the different processes. Many studies have relied on tensile tests for predicting the interface strength. This can obscure the non-uniform deformation of hybrid manufactured bulk materials. In this work, the 3-point bend test was used to assess interfacial strength. The results demonstrated that the loading side and positioning of the AM region had a substantial influence on joint strength. Flexural strength increased when the AM side is in compression. The wrought side under tension inhibited crack growth, preventing sample separation. Conversely, when the wrought side is in compression, the flexural strength decreased, and the sample fractured due to lower fracture toughness of the AM region. Microstructure investigation revealed a mixture of fine equiaxed and martensitic grains along the interface, coarse equiaxed elongated grains in wrought Ti64, and fully martensitic grains in DED Ti64. |