About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Materials
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Presentation Title |
Process Optimization and Mechanical Properties of Laser Powder Bed Fusion Built Haynes 230 |
Author(s) |
Ziheng Wu, Srujana Rao Yarasi, Erfan Rasouli, Ines-Noelly Tano, Vinod Narayanan, Anthony Rollett |
On-Site Speaker (Planned) |
Ziheng Wu |
Abstract Scope |
Haynes 230 is a nickel-based superalloy that is widely applied in high-temperature applications, e.g., heat exchanger, because of its excellent high-temperature mechanical performances. As of today, Haynes 230 is not a standard alloy used in metal additive manufacturing (AM) primarily due to the potential hot cracking problem at fast solidification. Being able to additively fabricate components in Haynes 230 is attracted to applications that require additional advantages gained by adopting AM, e.g., higher design complexity. In this study, we successfully fabricated crack-free Haynes 230 in a laser powder bed fusion process through parameter optimization. Tensile, creep, and fatigue coupons were built and tested to show AM and wrought Haynes 230 have comparable mechanical properties. The microstructure was characterized to show how process parameters and heat treatments affect the severity of cracking and mechanical properties. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |