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Conference Tools for 10th International Symposium on Superalloy 718 and Derivatives (2023)
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Meeting 10th International Symposium on Superalloy 718 and Derivatives (2023)
Symposium Superalloy 718 and Derivatives
Presentation Title Microstructural and Tensile Properties Evolutions of Direct-aged Waspaloy Produced by Wire Arc Additive Manufacturing
Author(s) Marjolaine Sazerat, Azdine Nait-Ali, Lucie Barot, Alice Cervellon, Inmaculada Lopez-Galilea, Dominique Eyidi, Anne Joulain, Patrick Villechaise, Jonathan Cormier, Sebastian Weber, Roland Fortunier
On-Site Speaker (Planned) Marjolaine Sazerat
Abstract Scope The microstructure and tensile properties of direct aged Waspaloy manufactured using wire arc-based Cold Metal Transfer (CMT) have been investigated. Samples were exposed to temperatures ranging from 700░C to 900░C, for up to 96 hours. In the as-deposited condition, pronounced chemical segregation is inherited from the process, leading to heterogeneous γ' precipitation between dendrite cores and interdendritic spacings. Precipitate size and distribution were measured in both areas for each heat treatment, and a diffusion-controlled coarsening behavior following the LSW theory was observed for temperatures above 760 ░C. Activation energies were calculated. Tensile tests at room temperature were carried out on the additive alloy pre- and post-aging, but also on wrought sub-solvus and super-solvus treated material for reference. Results showed that heat treatment significantly increased the yield strength and ultimate tensile strength of the CMT samples, of up to +340 MPa compared to the as-built conditions. Elongation, however, decreased from 40-45% to 16-28%. Direct aged CMT Waspaloy exhibited a similar behavior to that of wrought super-solvus Waspaloy, due to their large grains (~200-250 Ám). Anisotropy in tensile properties was estimated by calculating the ratio of properties for horizontal and vertical specimens. Finally, the formation of secondary phases was assessed. Thermodynamic calculations predicted the formation of M23C6, η and σ in interdendritic spacings at thermodynamic equilibrium. By using Electron diffraction patterns and Energy-Dispersive X-ray Spectroscopy in TEM, intergranular (Cr,Mo)23C6 secondary carbides decorating grain boundaries and near (Ti,Mo)C primary carbides in the interdendritic spacings were observed to nucleate and grow.
Proceedings Inclusion? Definite: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Abnormal Grain Growth Maps of Wrought Ni-base Superalloys
Alloy Design and Development of a Novel Ni-Co Based Superalloy GH4251
An ICME Framework to Predict the Microstructure and Yield Strength of INCONEL 718 for Different Heat Treatments
Application of Computational Materials and Process Modeling to Current and Future Aero-engine Component Development and Validation
Applied Calphad to IN718 and its Cast & Wrought Successors - a Physics Based Approach with Implications for Phase Stabilities, Precipitation and Microstructural Modeling
Characterization of Laser Powder Bed Fusion of Nickel Based Superalloy Haynes 282
Characterization of the Anisotropic Behaviour of Inconel 718 Parts Manufactured by Wire Arc Additve Manufacturing
Characterization of γ′ Precipitation Behavior in Additively Manufactured IN738LC Superalloy via In-situ Small-angle Neutron Scattering
Chemical Mapping of Superalloys at the Nanoscale
Compatibility of Wrought Superalloys with Supercritical CO2
Competitor Ti-comprising Refractory High Entropy Alloys to Superalloy 718 for Aeroengine Applications
Correlating Alloy 718 and Haynes 282 Solidification Microstructures to Local Thermal History using Laser Powder Bed Fusion Process Monitoring
Design of Graded Transition Interlayer for Joining Inconel 740H Superalloy with P91 Steel using Wire-arc Additive Manufacturing
Effect of Heat Treatment on the Mechanical Property and Deformation Mechanism of a Novel Cast Nickel-base Superalloy
Effect of Pre-straining on the Tensile and Stress-rupture Properties of a Novel Ni-Co Based Superalloy
Effect of Short-term Isothermal Exposure on the Ductility Signature of Waspaloy in the Temperature Range of 750-950░C – A Comparison with Haynes« 282«
Effects of High-temperature Oxidation on Fatigue Life of Additive-manufactured Alloy 625
Effects of Scan Strategy Induced Microstructural Differences on Thin-wall SLM IN718 Fatigue Performance
Fabrication and Weldability Aspects of Ni- and Ni-Fe Based Superalloys – A Review
Factors Influencing Propensity for Stress Relaxation Cracking in Inconel « Alloy 740H« and Practical Guidance for Applications
High-temperature Properties of Alloy 718 Made by Laser Powder-bed Fusion
Hot Corrosion Behavior of a GH4720Li Disk Superalloy at 700℃
In-situ HT-EBSD Measurements and Calibration of Multi-class Model for Grain Growth and δ-phase Dissolution Kinetics of Alloy 718
IN718 Cold Gas Repair Spray of Large Cavities – Microstructure and Residual Stresses
Influence of Morphology and Size Distribution of Haynes 230 Particles on the Powder Spreading Behavior and Performance on Selective Laser Melting
Investigating Deformation Mechanisms in a Creep-deformed 718-variant Superalloy
Investigating the Influence of Build Parameters and Porosity on Fatigue of AM IN718
Keyhole TIG Welding of New Co-lean Nickel-based Superalloy G27
Linking Stress Rupture Properties to Processing Parameters of HAYNES« 718 Nickel Superalloy via Machine Learning
Local Assessment of Mechanical Properties in Forged Alloy 718 Components Based on the Simulation of the Microstructure Evolution During Production
Long Term Thermal Stability and Oxidation Resistance of HAYNES 233 Alloy
Manufacturing Large Superalloy Pipe Bends
Mechanical and Microstructural Properties of Brazed Honeycomb Liner Material Haynes 214
Meeting the Challenges of the Future by Understanding Our Past
Microstructural and Tensile Properties Evolutions of Direct-aged Waspaloy Produced by Wire Arc Additive Manufacturing
Microstructural Stability and Strengthening Mechanism of a Ferritic Fe-Cr-Ni-Al Superalloy Containing Cuboidal B2 Nanoparticles
Microstructure and Mechanical Properties of Selective Laser Melting Processed TiC/GTD222 Nickel-based Composite
Microstructure Evolution During Post-heat Treatment of Haynes 282 Alloy Processed by Wire-arc Additive Manufacturing
Multi-variate Process Models for Predicting Site-specific Microstructure and Properties of Inconel 706 Forgings
Preferential γ' Precipitation on Coherent Annealing Twin Boundaries in Alloy 718
Segregation and Freckles in Alloy 718 and Related Alloys
Subcritical Crack Growth of 718 Alloy in Marine Exposure Conditions and Microstructural Modeling
Surface Roughness of Additively Manufactured IN718 & H282 Superalloys from Multi-size and Multi-laser Machines
Tailoring the γ- γ′-γ″ Dual Superlattice Microstructure of Ni-based Superalloy IN725 by High Temperature Aging and Nb/Ta Additions for Superior Creep Properties
Tensile Performance of Direct Energy Deposited IN718 and Oxide Dispersed Strengthened IN718
Tensile Properties of Inconel 718 Produced by LMD-Wire
The Effect of Microstructure on the Strength of VDM Alloy 780
Towards Enhancing Hot Tooling to Form High -𝛾′ Superalloys
Understanding Annealing Behavior during Post-build Heat Treatment of Ni-based Alloys Across Additive Manufacturing Processes

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