About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing Fatigue and Fracture V: Processing-Structure-Property Investigations and Application to Qualification
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Presentation Title |
Fatigue Crack Growth Rate of Electron Beam Melted (EBM) Titanium Alloy (Ti-6Al-4V): Effect of Crystallographic Texture and Internal Porosity |
Author(s) |
Nik Hrabe, Jake Benzing, Nick Derimow, Tim Quinn, Jolene Splett, Lucas Koepke |
On-Site Speaker (Planned) |
Nik Hrabe |
Abstract Scope |
The effects of crystallographic texture and internal pores 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 threshold behavior and the onset of unstable crack growth was observed due to internal porosity and texture variation. |
Proceedings Inclusion? |
Planned: |