About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
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Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
Presentation Title |
Post-heat Treatment Design of Haynes 282 Alloys Processed by Wire-arc Additive Manufacturing |
Author(s) |
Luis Ladinos Pizano, Soumya Sridar, Wei Xiong |
On-Site Speaker (Planned) |
Luis Ladinos Pizano |
Abstract Scope |
Solution heat treatment is applied to additively manufactured components to minimize texture, relieve residual stress, and reduce segregation. However, grain coarsening during this process also introduces strength deduction, which requires a proper design of both temperature and time for solubilization. In this work, we have systematically studied the effect of solubilization on grain structure, residual stresses and hardness of Haynes 282 samples printed by wire-arc additive manufacturing with two different scanning patterns: single-bead and meander. We observed a dependency of recrystallization behavior on scanning patterns during post-heat treatment. Samples with a single bead melting pattern experience higher cooling rates resulting in higher residual stresses. Therefore, the recrystallization process occurs at a lower temperature compared to the samples with a meander scanning pattern. The single bead sample treated at 1250°C for 2 h shows the greatest homogeneity while, the meander sample exposed to 1300 for 2 h is the most homogeneous. |