About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Key Process Variable Drifts and their Impact on Defect Structure and Tensile Behavior of L-PBF Ti-6Al-4V |
Author(s) |
Mohammad Salman Yasin, Arash Soltani-Tehrani, Arun Poudel, Shuai Shao, Nima Shamsaei |
On-Site Speaker (Planned) |
Arun Poudel |
Abstract Scope |
The process parameters used in laser powder bed fusion (L-PBF) influence the defect formation in fabricated parts. However, key process variables (KPVs) such as laser power and hatch distance may drift within their tolerances during fabrication. These variations can result in different defect contents in parts and consequently, may lead to build-to-build inconsistency. Therefore, this study aims to investigate the effects of KPV drifts on the porosity and tensile behavior of L-PBF Ti-6Al-4V. To simulate potential drifts in the parameters of EOS M290 L-PBF machine, laser power and hatch distance are altered by ± 4% and ± 2.4%, respectively, according to the manufacturer’s input. Porosity analysis and hardness tests are conducted on witness coupons, while tensile tests are performed on machined specimens. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |