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Meeting MS&T23: Materials Science & Technology
Symposium Phase Transformations and Microstructure Evolution during Post-Processing of Additively Manufactured Metals
Presentation Title Microstructural Evolution of One and Two Step Heat Treatments on Electron Beam Powder Bed Fusion Fabricated Haynes 282
Author(s) Alivia Mourot, Avantika Gupta, Sriram Vijayan, Joerg Jinschek, Carolin Fink
On-Site Speaker (Planned) Alivia Mourot
Abstract Scope Haynes 282 was found to be an ideal candidate in industrial gas turbine engine applications due to its high temperature creep resistance and strength. As a promising fabrication method, additive manufacturing (AM) has emerged as a cost- and material-efficient method to produce near net shape components. However, it proves difficult to manufacture desired microstructures, especially when compared to conventional processing methods. One way to achieve desired microstructures and properties in AM builds is to use post-process heat treatments. In this study, we investigated the microstructural evolution of a Haynes 282 pyramidal build subjected to a one-step and a two-step aging treatment. A systematic study of both the as-fabricated and heat-treated samples was performed using scanning electron microscopy, electron backscattered diffraction, and Vickers hardness mapping. The mechanism governing the microstructural evolution from the as-fabricated state to the aged state will be discussed.


Additive Manufacturing of 718 Ni ODS Alloys and Haynes 230 Alloys with Nanoprecipitates
Impact of Heat Treatment Rates on Phase Transformation in Additively Manufactured Gamma Prime Superalloys IN738LC
Influence of Post-process Forging on Microstructure and Properties of LPBF AlSi10Mg
Influence of Post Processing Annealing on Precipitation and Deformation Behavior of Additvely Processed Beta Titanium Alloys
Laser Reheating and Polishing of Powder-blown Directed Energy Deposition
Microstructural Evolution of One and Two Step Heat Treatments on Electron Beam Powder Bed Fusion Fabricated Haynes 282
Microstructure and Mechanical Characterization of As-deposited and Forged Wire Arc Additively Manufactured (WAAM) 316LSi
Microstructure Engineering of Specialty Alloys via Post Advanced Manufacturing Thermal Treatments
Observation of Structure Coarsening During Annealing of Additively Manufactured Ti-6Al-4V
Tuning the Precipitate Microstructure in the Selective Laser Melted Ti-6Al-2Sn-4Zr-2Mo Alloy via Post Heat Treatment
Understanding the Microstructure Evolution Pathway During the Post Heat Treatment in the Direct Energy Deposited Ti-5Al-5Mo-5V-3Cr Alloy
Use of In Situ TEM Heating to Study Transformation Pathways for Metastable Phases in New Candidate Alloys for Additive Manufacturing

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