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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Alloy Development and Powder Manufacture for Additive Manufacturing
Presentation Title Alloy Design Strategies for the Adaptation of Non-weldable Compositions for Additive Manufacturing
Author(s) Tim Prost, Ralph Napolitano, Emma White, Michael Kirka, Ryan Dehoff, Iver Anderson
On-Site Speaker (Planned) Tim Prost
Abstract Scope Extension of additive manufacturing to aerospace gas turbines promises enhanced design flexibility but calls for developments in process/alloy design. While powder-based e-beam processes show great potential, many nickel-base alloys currently used for rotating and stationary high temperature components exhibit severe cracking during processing, generally associated with solidification segregation, undesirable phases, remelt behavior, and hot cracking, all compounded by stresses that develop during the build. Mitigation of process-related cracking requires advancement on several fronts, generally including alloy design, powder production, and e-beam build strategies. In the work presented here, we examine new alloy compositions around conventional Mar-M 247. Using computational thermodynamics, test builds, and various characterization techniques (SEM, EBSD, EDS and S/TEM) we investigate segregation and phase constitution, tracking the results of alloy modifications from powder production through test builds with repetitive remelting cycles. Support from U.S. DOE-EERE-Advanced Manufacturing Office in partnership with ORNL-MDF at Ames Laboratory through contract no. DE-AC02-07CH11358.765.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Additive Manufacturing of a Quasicrystalline Phase Former Al-based Alloy Obtained Using Recycled Material
Alloy Design Principles for Additive Manufacturing – Lessons from Learned from Welding Metallurgy
Alloy Design Strategies for the Adaptation of Non-weldable Compositions for Additive Manufacturing
Aluminium Alloy Design for Selective Laser Melting
Aluminium Alloy Development for Additive Manufacturing
Bridging the Gap Between Rapid Solidification and the Additive Manufacture of Novel Aluminum Alloys
Characterization of Metal Additive Manufacturing Surfaces Using Synchrotron X-ray CT and Micromechanical Modeling
Computational Design of High-performance Aluminum Alloys for Additive Manufacturing
Current Understanding and Status of Ni-base Superalloys for Additive Manufacturing: Towards Alloy Development for AM
Designing Fe-Ni-Al and Fe-Ni-Ti Maraging Steels for In-situ Precipitation Hardening during Laser Metal Deposition
Developing Powder Rheology Relationships for Characterization of Metal Powder Feedstocks Used in Additive Manufacturing
Development and Application of Techniques for Rapid Alloy Screening via Novel Bicombinatorial Approaches
Effect of Atomizing Media on Mechanical Properties of 17-4 PH Stainless Steel Additively Manufactured via Selective Laser Melting
Fabrication of Hastelloy X by Electron Beam Melting and Selective Laser Melting
High Entropy Alloys for Additive Manufacturing
Hybrid AM Processing Reduces Stresses and Produces Equiaxed Microstructures
Increasing Powder Yields and Quality for Additive Manufacturing by Fundamental Processing Research on Gas Atomization
Laser Engineered Net Shaping (LENS) of High Entropy Alloys
Microstructural and Orientation Changes by Modifications on Composition and Processing Parameters In Additive Manufactured Materials
Microstructural Optimization and Design of Metallic Materials for AM
Microstructure and Mechanical Properties of BN Reinforced Inconel 718 Composites Processed by Laser Powder Bed Fusion (LPBF)
Microstructure Development in Isolated Melt Pools of Electron Beam Melted Inconel 718
Performance of PTA AM Components for Mining and Energy Applications
Preventing the Coarsening of Al3Sc Precipitates by the Formation of a Zr-rich Shell during Laser Metal Deposition
Progress toward the Use of Elemental Powders for Additive Manufacturing of Aluminum Alloys
Rapid Solidification of Cu-Sn(-Ti) Based Alloys: Towards Alloy Design for Selective Laser Melting
Relationship between Alloy Composition and Solidification Conditions
RF Plasma Powder Metallurgy: An Overview of Applications for Material Development in Additive Manufacturing
Synchrotron Radiation, XPS Depth Profiling and TEM Characterization for Understanding the Powder Microstructures of Some Key Printable Ti materials, and their Implications for Additive Manufacturing
The Metalysis Process - a Flexible Distributed Manufacture Route for the Production of Novel AM Powders
Thermal Stability of Laser Sintered Nanostructured Powder

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