| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture: Developing Predictive Capabilities
|
| Presentation Title |
Flaw Type Dependent Tensile Properties of 316L Stainless Steel Manufactured by Laser Powder Bed Fusion |
| Author(s) |
Nathalia Diaz Vallejo, Ke Huang, Christopher Kain, Le Zhou, Jeongmin Woo, Nicolas Ayers, Asif Mahmud, Erin Honse, Han Chan, Alexander S. Hall, František Zelenka, Yongho Sohn |
| On-Site Speaker (Planned) |
Nathalia Diaz Vallejo |
| Abstract Scope |
Effects of flaws, namely keyhole porosity (KHP) and lack-of-fusion flaws (LFF), on the tensile behavior were examined for 316L stainless steel manufactured by laser powder bed fusion (LPBF) by intentionally introducing them through variations in laser scan speed and laser power, while hatch spacing (0.12mm) and slice thickness (0.03 mm) were held constants. Optical microscopy, electron microscopy and X-ray tomography were used to document amount, type, size, shape and distribution of these flaws. Quasi-static tensile behavior was investigated using both the miniaturized and standard size specimens on these samples with quantified flaw characteristics. Changes in yield strength, tensile strength and elongation at fracture were examined to correlate characteristics of flaws, fracture surface features, relative density of 316L samples and size of the tensile specimens. |
| Proceedings Inclusion? |
Planned: |