Proceedings of the 9th International Symposium on Superalloy 718 &

This technical meeting will focus on Alloy 718 and Superalloys in this class relative to alloy and process development, production, product applications, trends and the development of advanced modeling tools. The symposium provides an opportunity for authors to present technical advancements relative to a broad spectrum of areas while assessing their impact on related fields associated with this critical alloy group. There are continuing innovations relative to these alloys as well as novel processing techniques which continue to extend applications in very challenging environments ranging from corrosion resistance in the deep sea to high-stressed space applications.

This technical meeting will focus on Alloy 718 and Superalloys in this class relative to alloy and process development, production, product applications, trends and the development of advanced modeling tools. The symposium provides an opportunity for authors to present technical advancements relative to a broad spectrum of areas while assessing their impact on related fields associated with this critical alloy group.  There are continuing innovations relative to these alloys as well as novel processing techniques which continue to extend applications in very challenging environments ranging from corrosion resistance in the deep sea to high-stressed space applications.

Part 1. Superalloy 718 & Derivatives: Keynotes.- Age Hardenable Nickel-based Alloy Developments and Research for New High Temperature Power Cycles.- Superalloy 718; Evolution of the Alloy from High to Low Temperature Application.- Part 2. Alternative Processes.- Alloy 718: Laser Powder Bed Additive Manufacturing for Turbine Applications.- Progress in the Processing and Understanding of Alloy 718 Fabricated through Powder Bed Additive Manufacturing Processes.- Impact of Powder Variability on the Microstructure and Mechanical Behavior of Selective Laser Melted Alloy 718.- The effect of location and post-treatment on the microstructure of EBM-built Alloy 718.- Part 3. Applications.- ICME Based Additive Manufacturing of Alloy 230 Components.- Simulation of Co-Precipitation Kinetics in Superalloy 718.- Part 4. Corrosion.- Performance of Wrought Superalloys in Extreme Environments.- Corrosion and Carburization Behavior of Ni-Cr-Mo-Nb Superalloys in a High Temperature Supercritical-CO2 Environment.- High Performance New Ni-base Alloy AF955 (UNS N09955) for Oil and Gas Industry.- Hydrogen Influence on Crack Propagation and Stress-Strain Evolution of Alloy 718.- Isothermal Oxidation Behavior of EBM-additive Manufactured Alloy 718.- Part 5. Melting and Casting.- A Computational Model of the Electroslag Remelting (ESR) Process and Its Application to an Industrial Process for a Large Diameter Superalloy Ingot.- Effect of Homogenization Temperature on Microstructures of IN718C Alloy with Different Solidification Cooling Rates.- Grain Refinement of IN718 Superalloy under the Modified Thermally-controlled Solidification Process.- Melt Parameters and Resulting Characteristics in Laboratory-Scale Electroslag Remelting.- Production of Nitride-free 718 by the VIM-VAR Processing Route.- Part 6. Microstructure and Behavior.- Characterization and Modeling of Deformation Mechanisms in Ni-base Superalloy 718.- Characterization of Nano-Scale' Phase in HPT-Disk P/M Superalloys HGN300 by Small-Angle X-ray Scattering.- Development of an Automated Property Simulation Tool for Direct Aged Alloy 718 Engine Disk Forgings.- Microstructure Dependence of Dynamic Impact Behaviour of ATI 718Plus Superalloy.- 3D Stochastic Modelling of Microstructure Evolution during Solidification of Alloy 718.- Analysis of microporosity-dependent fatigue crack behavior in Alloy 718 by using synchronic radiation X-ray CT and FEM.- Characterisation of the Initial Stages of Dynamic Recrystallisation in ATI 718Plus®.- Compositional Design and Mechanical Properties of INCONEL® Alloy 725 Variants.- Constrained Lattice Misfit Measurement in Bulk Inconel 718 Using High Resolution Neutron Diffraction.- Dependence of Creep Strength on Cooling Rate after Subsolvus Solution Treatment in Wrought Alloy 718.- Depletion Induced Grain Growth in Alloy 751 after Long Term Aging and Its Effect on Fatigue.- Effect of Grain-Boundary Fe2Nb Phase on Stress-assisted Grain-Boundary Oxidation Behavior in Novel Austenitic Heat-resistant Steel of Fe-20Cr-35Ni-2.5Nb.- Effect of Heat Treatment on Microstructure and Mechanical Properties of VDM Alloy 780 Premium.- Effect of Homogenization on Creep of Additive Manufactured Inconel 718.- Effects of HIP and Heat Treatment on Microstructure, Fracture Toughness and Fatigue Crack Growth Behavior of SLM-Based IN718.- Effects of Phosphorus Addition on Creep Properties of Wrought Gamma-Prime Strengthened Ni-based Superalloy.- Enhanced Strength of Inconel 718 by High Rate Severe Plastic Deformation.- Evaluation of the Stress-Strain State in Alloy 718 after Hydrogen Charging.- Experimental TTT Diagram of HAYNES 282 Alloy.- Influence of Residual Stresses on Aging Precipitation Behavior of Alloy 718.- Machine learning to optimize additive manufacturing parameters for laser powder bed fusion of Inconel 718.- Mechanical Performance of Various INCONEL® 740/740H Alloy Compositions for Use in A-USC Castings.- Microstructural Characterization and Mechanical Properties of Rene 65Precipitates.- Microstructure Development in Track-by-track Melting of EBM-manufactured Alloy 718.- Modeling Tensile, Compressive, and Cyclic Response of Inconel 718 Using a Crystal Plasticity Model Incorporating the Effects of Precipitates.- Novel Fractgraphy of Ni-based Alloy by SEM/EBSD Method.- On the Effect of Alloying Additions to the Ni-Cr-Al-Nb Dual-Superlattice Gamma-Gamma Prime-Gamma Double Prime Superalloys.- Optimization of the Forging Process Window in Respect of AGG, IGG and Direct Age Effect in Alloy 718 Engine Disks.- Oxidation-assisted cracking at 650 °C in superalloy 718 manufactured by Laser Beam Melting: Effect of temperature and strain rate.- Precipitation Behavior and Mechanism of Sigma Phase in Alloy 925.- Quantitative Texture Prediction of Epitaxial Columnar Grains in Inconel 718 Processed by Additive Manufacturing.- Research of Twin Induced LCF Cracking for 718 Alloy Using In-Situ Observation.- Shear Spinning of Nickelbased Superalloy 718.- Strain Controlled Low Cycle Fatigue Behaviors of U720Li Disk Superalloy above 700 °C.- Stress Relaxation Behavior Comparison of Typical Nickel-base Superalloys for Fasteners.- Study of the Oxidation Assisted Intergranular Cracking Mechanism on a Ni-base Superalloy.- The Effect of Grain Size on the Dwell Fatigue Crack Growth Rate of Alloy 718Plus.- Thermal Processing Design of Cast INCONEL® Alloy 740H for Improved Mechanical Performance.- Part 6. Welding and Joining.- Factors Influencing Weldability of Nickel Superalloy Investment Castings.- Fracture Toughness and Fatigue Behaviour of Variably Precipitated Inconel 625/AISI 304L Welds.- Pitting Behavior of Thermally Aged Inconel 625 Weld Claddings Made Using SMAW and GMAW Process.- Review of weldability of precipitation hardening Ni- and Fe-Ni-based superalloys.- The Influence of Base Metal Microstructure on Weld Cracking in Manually GTA Repair Welded Cast ATI 718Plus®.- Varestraint Weldability Testing of ATI 718Plus® - Influence of Eta Phase.- Part 7. Wrought Process.- The Case for Physical Experiments in a Digital Age.- The High-Temperature Bauschinger Effect in Alloy 718.- Influence of Temperature and Strain Rate during Rolling of René 65 Bar.- Microstructure Controlling of U720-typed Superalloys to Improve a Hot and Cold Workability by Using Incoherent Gamma Prime.- Ring Rolling of IN718 for Critical Engine Applications.- The Abnormal Dynamic Recrystallization Behavior of Alloy 706 for Large Size Disc.- Part 8. Other Topics.- Application of Analytical Electron Microscopy and Tomographic Techniques for Metrology and 3D Imaging of Microstructural Elements in Allvac 718Plus.- Computed Tomography as an Alternative Method to Measure Crack Growth in Non-conventional Geometries.- Development of New Alloy 718 with Super Machinability.- Development of Ni-base Disk Alloy for Large-size Gas Turbines by Improving Macrosegregation Property of Alloy 718.