| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture IV: Toward Confident Use in Critical Applications
|
| Presentation Title |
Effects of Internal Porosity and Crystallographic Texture on Fatigue Crack Growth Rate of Electron Beam Melted (EBM) Titanium Alloy (Ti-6Al-4V) |
| Author(s) |
Nik Hrabe, Jake Benzing, Timothy Quinn, Lucas Koepke, Jolene Splett |
| On-Site Speaker (Planned) |
Nik Hrabe |
| Abstract Scope |
The effects of internal pores and crystallographic texture on ASTM E647 fatigue crack growth rate (R = 0.1) of EBM Ti-6Al-4V were investigated by studying material in the as-built and HIPed conditions as well as in two orthogonal crack growth directions with respect to the build direction. HIPing sufficiently reduced porosity (x-ray CT), and unexpected texture variation (EBSD) was observed for this material (i.e. NOT <100>β-fiber in the build direction). Significant effect on the onset of unstable crack growth was observed due to internal porosity and texture variation. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |