About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
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Presentation Title |
M-18: Comparison of Defect Structures and Fatigue Behavior of Ti-6Al-4V Specimens from Two Different L-PBF Machines |
Author(s) |
Mohammad Salman Yasin, Jia Liu, Shuai Shao, Nima Shamsaei |
On-Site Speaker (Planned) |
Mohammad Salman Yasin |
Abstract Scope |
Although additive manufacturing (AM) can be used to form complex functional parts, defects within the built parts can deteriorate their structural integrity significantly. The current study aims to use two different laser-powder bed fusion machines (EOS M290 and Renishaw AM250) to gauge the difference in the formed defects and resultant fatigue behavior of Ti-6Al-4V specimens. All specimens are fabricated in a vertical direction with optimized process parameters from the original equipment manufacturer. Post-fabrication, specimens are stress-relieved at 700°C for an hour and then furnace cooled. Finally, the specimens are machined to geometry and size according to ASTM E606. The internal defect structure within the machined specimens is inspected using X-ray computed tomography. Strain-controlled fatigue tests are conducted and fractographic analysis is conducted to analyze the failure mechanism. Finally, the relationship between the defects and corresponding fatigue life is analyzed for both machines. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Titanium, Mechanical Properties |