| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Titanium-based Materials: Processing, Microstructure and Material Properties
|
| Presentation Title |
Effects of Scan Strategies on Residual Stresses in Laser Powder Bed Fusion Ti-6Al-4V |
| Author(s) |
Courtney B. Morgan-Barnes, Brad Sampson, Ryan Stokes, Haley Doude, Matthew Priddy, Linkan Bian |
| On-Site Speaker (Planned) |
Courtney B. Morgan-Barnes |
| Abstract Scope |
Development of residual stresses in additively manufactured (AM) parts have thus far required costly post-processing treatments to control and produce viable solid materials. Designing parts with production methods informed by simulated conditions and an understanding of process parameters for that material could prevent these added costs. To achieve this goal, the effect of basic process parameters like scanning strategies on the production of residual stresses must be better characterized and understood. Laser powder bed fusion (L-PBF) was utilized in an AM 400 system to produce Ti-6Al-4V samples of a benchmark residual stress bridge geometry from the NIST AM-Bench 2018 test series (AMB2018-01). These were characterized by optical profilometer, X-ray computed tomography (XCT) scanning, and scanning electron microscope (SEM) imaging. Three samples of differing scan patterns were measured by synchrotron energy-dispersive x-ray diffraction and analyzed to obtain estimated internal residual stress values. Comparisons are made with similar examples in literature. |