| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-29: Characterization of Microstructural Heterogeneities in EBM-PBF Haynes 282 using Linear and Random Scan Strategies |
| Author(s) |
Alivia Mourot, Sriram Vijayan, Joerg Jinschek, Carolin Fink |
| On-Site Speaker (Planned) |
Alivia Mourot |
| Abstract Scope |
The high temperature creep resistance of Haynes 282, a precipitation strengthened Ni-based superalloy, makes it ideal for industrial turbine engine applications. However, when fabricated using additive manufacturing (AM) methods such as electron beam powder bed fusion (EBM-PBF), further research is needed to understand heterogeneities in microstructure and properties caused by the non-equilibrium AM process and the component design. This work presents results from systematic characterization on two identical pyramid-shaped Haynes 282 components fabricated using a linear and a random spot scan strategy. Scanning electron microscopy, electron backscattered diffraction, and micro-hardness mapping were conducted to determine process-structure-property relationships. For both scan strategies, hardness decreased by ~4% along the build direction. The columnar gamma grains showed a pronounced texture in the <001> orientation. Differences were observed in terms of local misorientation, defect formation, and gamma prime size. The random scan strategy showed higher local misorientation, larger defects, and increased gamma prime size. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Characterization, Copper / Nickel / Cobalt |