| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing Modeling, Simulation, and Machine Learning: Microstructure, Mechanics, and Process
|
| Presentation Title |
Residual Stress in LHW-DED Ti-6Al-4V Single Walls |
| Author(s) |
Rajib Halder, Jack Canaday, Matthew Dantin, David Guirguis, Christopher Fancher, Jack Beuth, Anthony D Rollett |
| On-Site Speaker (Planned) |
Rajib Halder |
| Abstract Scope |
Thin Ti-6Al-4V wall structures are commonly used as structural aerospace components. They are mainly produced by AM techniques due to their significant advantages over traditional milling and machining techniques or welded analogs. In this study, we investigated the residual stress development in Ti64 thin walls made via an LHW-DED process as a function of changes in dwell time using the HIDRA neutron strain scanner at the HFIR in ORNL. The analysis revealed that the maximum tensile stress was located in the center of the first layer near the base. Furthermore, the stress at the center of the wall length near the substrate is higher than that at the long ends of the wall. The longitudinal stress component was found to be higher than the normal component. Finite element analysis was used to simulate the development of residual stress, and the results were compared with those from neutron diffraction. |