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Meeting Materials Science & Technology 2019
Symposium Additive Manufacturing of Metals: Post Processing
Presentation Title Optimizing Microstructure in AM Alloys through the Development of AM-Specific Heat Treatments
Author(s) Branden B. Kappes, Thomas Gallmeyer, Nathan Johnson, Sen Liu, Behnam Aminahmadi, Xiaoli Zhang, Aaron Stebner
On-Site Speaker (Planned) Branden B. Kappes
Abstract Scope Alloys designed for cast and wrought (C&W) processing, such as 17-4PH stainless steel, Inconel 718, and Ti-6Al-4V, have been conscripted for use in Additive Manufacturing (AM), but the complex thermal histories in AM lead to microstructures, defects, and chemical partitioning that do not occur during C&W processing. These features have a significant effect on microstructural evolution during post-build thermal processing. Our recent work has shown that the ASTM standard annealing schedules do not produce the same properties when applied to AM IN718, and that post build heat treatments must be designed specifically for AM. This presentation will discuss the impact of new heat treatments on the microstructure of Inconel 718, 17-4PH steel, Ti-6Al-4V and the use of statistical, sequential learning, and artificial intelligence models to accelerate the development of heat treatments that retain strengthening features unique to AM while evolving the precipitate and refined grain size that optimize mechanical performance.
Proceedings Inclusion? Planned: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Comparison of Bioactive Anodization Coatings on Wrought and Additively-manufactured Ti-6Al-4V Substrates
Correlation between Surface Texture and Mechanical Performance of AM Components
Effect of HIP & Heat Treatment on the Stitched Zones of Inconel 718 Printed by Multi Laser PBF-L
Electrochemical Surface Finishing of Complex Additively Manufactured Parts
Fatigue Behavior of Post-build Surface Processing on Electron Beam Melted Ti-6Al-4V
How Do EBM Alloy 718 Builds with Distinct Microstructures Respond to Thermal Post-treatment?
Impact of Sensitization and Etching Parameters to Selectively Dissolve Support Structures from PBF-processed Metal Components
Implementing a Commercially Available Self-locking Screw System in Additively Manufactured Medical Implants
Influence of Thermal Treatments on Microstructure, Hardness and Mechanical Properties of AlSi10Mg Alloy Processed by Selective Laser Melting.
Laser Beam Powder Bed Fusion and Post Processing of Alloy 247LC
Laser–MIG Hybrid Welding of AlSi10Mg Parts Produced by Selective Laser Melting
Microstructural Evolution in Laser Powder Bed Fusion AlSi10Mg
Microstructure and Properties of Additive Laser Powder Bed Fusion Processed and Heat-treated Co-29Cr-5Mo Alloy
Microstructure and Properties of Additive Laser Powder Bed Fusion Processed and Heat-Treated IN625 Alloy
Multiscale Area Analysis of Surfaces Produced in a Laser Powder Bed Fusion Process
On Silicon Morphology In Additively Manufactured AlSi10Mg: Effects of Various Post Heat Treatments
Optimizing Microstructure in AM Alloys through the Development of AM-Specific Heat Treatments
P3-24: Comparative Study between the Processed and Unprocessed TIG Welded Joints
Post-processing Heat Treatments and Residual Stress Behavior of AlSi10Mg
Post Processing AM-made Rotorplates for Axial Flux Permanent Magnet Motors: Successes and Challenges
Surface Finishing of DMLS and DED IN-625 for Optimal Mechanical Performance
The Role of Nitrogen in Laser-Powder Bed Fusion (L-PBF) and Hot-isostatic Pressing (HIP) of High-alloyed Austenitic Stainless Steels
Thermohydrogen Refinement of Microstructure (THRM) as a Post-treatment to Improve Reliability of Additively Manufactured Titanium Alloy Components
Use of Hot Isostatic Pressing Treatments to Manipulate Defect Content, Microstructure, Tensile Properties and Fracture Toughness in Additively Manufactured Ti-6Al-4V Parts

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