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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 IN718 Cold Gas Repair Spray of Large Cavities – Microstructure and Residual Stresses
Author(s) Florian Lang, Johannes-Christian Schmitt, Sandra Cabeza, Thilo Pirling, Jochen Fiebig, Robert Va▀en, Jens Gibmeier
On-Site Speaker (Planned) Florian Lang
Abstract Scope Cold spraying is an established process for coating substrates with similar or dissimilar materials. By use of a high-pressure process gas stream, solid particles are accelerated onto a substrate at high velocities. The method is particularly suited for repair applications, since neither structural changes nor oxidation occur during the process. Furthermore, cold spray coating usually induces compressive residual stresses in the coating system that positively influence the fatigue behaviour. To investigate the suitability of the cold spray process for repairing large cavities in Inconel 718 components, sample geometries were manufactured, containing tapered cavities with a depth of 4 mm. The cavities were filled with Inconel 718 particle by cold gas spraying. Non-destructive high-resolution neutron diffraction experiments were performed using the SALSA instrument at the Institut Laue-Langevin (ILL) to evaluate the local residual stress state in the as-sprayed condition. 2D maps of the residual stress distribution over the cross- sectional area of the samples were determined. Additionally, complementary laboratory X-ray diffraction (XRD) and incremental drilling analyses were carried out. The results indicate compressive residual stresses within the filled process zone, which are considered positive for the fatigue and wear resistance of the repaired components. Furthermore, metallographic examinations show a good bonding between the repair filling and the substrate as well as strongly deformed particles within the repaired region. The latter indicates significant plastic deformation during cold spraying, which is in agreement with the broader diffraction lines from the neutron and X-ray diffraction analyses in the filler compared to the substrate.
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 CALPHAD Based Tools to Modeling of Alloy 718
Application of Computational Materials and Process Modeling to Current and Future Aero-engine Component Development and Validation
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
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 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℃
Hot Ductility and Microstructural Evolution of Hastelloy X Produced by Laser Metal Deposition using Powder as Feedstock Material (DED-p)
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 Studies of Heat-Treated Alloy 625 Fabricated by Laser Powder Bed Fusion
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
(LBN - P1) Investigation of the Deformation Mechanisms for Bi-Modally Distributed γ’ Precipitates in Allvac 718Plus Superalloy
(LBN - P2) Phase Stability and Phase Transformation Related to Nb/Ta Additions in a Ni-based Superalloy
(LBN - P3) Development of Ni Based Superalloys with Medium Entropy Alloys Concept
(LBN - P4) Laser-Powder Bed Fusion Additive Manufacturing of Haynes 282 Concentrating Solar-Thermal Power (CSP) Plant Parts: Printability, Geometry, Surface, and Microstructure.
(LBN - P5) Phase Evolution and Tensile Deformation of IN718-RenÚ41 Graded Superalloy Fabricated by Directed Energy Deposition
(LBN - P6) Exploring High Temperature Fretting Wear Behaviour in Wrought and Additively Manufactured DA-718 Superalloy

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