About this Abstract |
Meeting |
2025 AWS Professional Program
|
Symposium
|
2025 AWS Professional Program
|
Presentation Title |
High Temperature Tensile Behaviour of As-Built and Heat Treated Haynes 282 Fabricated by Laser Powder Bed Fusion |
Author(s) |
Kameshwaran Swaminathan, Joel Andersson |
On-Site Speaker (Planned) |
Kameshwaran Swaminathan |
Abstract Scope |
Ni-based superalloy Haynes 282 typically used in aerospace components and super critical reactors at elevated temperatures up to 760℃. Tensile behaviour of Haynes 282 specimens manufactured using laser powder bed fusion and heat treated at different solution treatment temperatures is studied in this work. The intention is to understand the effect of solution temperature on the microstructure and mechanical properties at elevated temperature. Conventional solution treatment (1150℃) for up to an hour does not recrystallise the matrix, whereas higher solution treatment temperature (1250℃) for even 10 minutes is sufficient for recrystallisation. Effect of recrystallisation of the matrix or lack thereof, on mechanical properties is studied using elevated temperature tensile tests along and perpendicular to the build direction. Non-recrystallised microstructure resulted in anisotropic properties typical to the morphology present in as built and heat-treated samples. Recrystallised microstructure exhibits limited anisotropy and still comparable properties to wrought material in both directions. The mechanisms for such recrystallization behaviour and the resultant tensile properties at elevated temperature will be discussed during the oral presentation. |
Proceedings Inclusion? |
Undecided |