About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Deformation and Damage Mechanisms of High Temperature Alloys
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Presentation Title |
Defect Control and Mechanical Properties of Laser Powder Bed Fusion Built Haynes 230 for High Temperature Application
|
Author(s) |
Ziheng Wu, Junwon Seo, Nicholas Lamprinakos, Srujana Rao Yarasi, Anthony Rollett |
On-Site Speaker (Planned) |
Ziheng Wu |
Abstract Scope |
Nickel-based superalloys are widely applied in high-temperature applications, e.g., heat exchangers, because of their excellent high-temperature mechanical performance. As of today, Haynes 230 is not a standard alloy used in metal additive manufacturing (AM) primarily due to the potential for solidification cracking at fast cooling. Being able to additively fabricate components in Haynes 230 attracts many applications that require the additional advantages leveraged by adopting AM, e.g., higher design complexity. In this study, we successfully fabricated crack-free Haynes 230 parts in a laser powder bed fusion process through process parameter optimization. Tensile, creep, and fatigue tests were performed 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? |
Planned: |
Keywords |
Additive Manufacturing, High-Temperature Materials, Mechanical Properties |