| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
2023 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-26: Effects of Varying Heat Accumulation in Laser Powder Bed Fusion on Microstructure Outcomes in Ti-6Al-4V |
| Author(s) |
Evan B. Adcock |
| On-Site Speaker (Planned) |
Evan B. Adcock |
| Abstract Scope |
The fast temperature changes in laser powder-bed fusion impact the microstructure of the material being printed; likewise, part geometry and printing parameters will affect the overall temperature history. To investigate this phenomenon in Ti-6Al-4V, two “inverted pyramids” were printed with a specific geometry to generate variability in thermal history within the part. One pyramid was printed as normal while the other had an intentional delay between layers to allow more cooling. The microstructure outcome has been analyzed by backscatter scanning electron microscopy and X-ray diffraction. Microhardness tests have also been conducted across large sections to probe the mechanical property variation in relation to observed microstructure. Simultaneously, temperature simulations are being performed for comparison with in-situ build data and further analysis of the microstructure with a process prediction model. Microstructure and property trends within each build have been found relative to the overall heat accumulation at different layers. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Titanium, Characterization |