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Meeting 2025 TMS Annual Meeting & Exhibition
Symposium Designing Complex Microstructures through Additive Manufacturing
Presentation Title A corroborative in-situ, ex-situ and 3D study of recrystallisation in ABD-900AM
Author(s) Yuanbo Tang, Anh Hoang Pham
On-Site Speaker (Planned) Yuanbo Tang
Abstract Scope We made particular use of high-temperature confocal laser scanning microscopy to investigate static recrystallization in as-printed ABD-900AM superalloy. In this way, insights are gained into important recrystallisation process with direct observations made – for the first time in this class of material – of phenomena such as nucleation of recrystallisation, subsequent grain growth, jerky flow of boundaries due to pinning and twin formation. The nucleation process – requiring strain-free lattice to be created by grain boundary migration – is visualised and its role in limiting the kinetics of recrystallisation is elucidated. Moreover, it is demonstrated that boundary mobility is initially prevented by Smith-Zener pinning due to fine dispersion of secondary phases but also with a role played by solute drag caused by cellular micro-segregation. With increasing annealing time, the retarding pressure reduces due to carbide coarsening and/or dissolution as well as matrix compositional homogenisation, eventually allowing recrystallisation to take place.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Copper / Nickel / Cobalt,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A corroborative in-situ, ex-situ and 3D study of recrystallisation in ABD-900AM
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Design of Graded Microstructures Between Vanadium and Stainless Steel
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Effect of Alumina doping at SS-Al bimetallic Interface
Effect of laser melt schedule on the microstructure of additively manufactured IN718 alloy
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Enabling Microstructure Manipulation in Laser Powder Blown Directed Energy Deposition through Multi-mode Laser Beam Shaping
Engineering gradient microstructure via laser-directed energy deposition for superior dynamic mechanical properties
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Enhancing Mechanical Properties of Alloys with Non-equilibrium Microstructures Formed During Hydrogel Infusion-based Additive Manufacturing (HIAM)
Enhancing Mechanical Properties of Bio-inspired, 3D-printed Composites via Topological Interlocking
Exceptional Strength and Ductility in Heterogeneous Multi-Gradient TiAl Alloys through Additive Manufacturing
Formation of a novel nano-lamellar microstructure in peritectic alloys via Laser surface remelting
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In-situ Exposure of Microstructure via Spot Melting in Electron Beam Powder Bed Fusion
Influence of phase constitution on the corrosion behavior of Al-added steels produced by laser-based powder bed fusion processes
Integrated Computational-Experimental Framework for Production of Additively Manufactured Functionally Graded Materials from Structural to Refractory Alloys
Interpenetrating microstructure in laser powder-bed fusion parts using selective rescanning
Invar-Ag Microcomposites Formed by Ag Dendritic/Cellular Infiltration of pre-Cast or pre-Additively Manufactured Invar-Cu
Investigating Microstructural Evolution and Internal Stress Development in Additively Manufactured Metals Using Phase Field Modeling
Laser powder bed fusion of CuCrZr - In625 multi-materials
Laser powder bed fusion of In718/GRCop-42 bimetallic structures: effect of deposition order and process parameters
Laser Powder Bed Fusion Processing of Oxide Dispersion-Strengthened (ODS) Pure Copper for High-Resolution and High-Strength Complex-Geometry 3D Components
Microstructural Control in Directed Energy Deposition: In-Situ Layer Thickness Control and Analytical Modeling with 316L Stainless Steel
Microstructural control of additively manufactured Ti-6Al-4V via in-situ laser annealing
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Microstructure and Heterogeneous Deformation of Functionally Integrated Materials Fabricated by Directed Energy Deposition Additive Manufacturing
Microstructure and Texture Control in Laser Powder Bed Fusion Manufactured Haynes 282
Microstructure Evolution and kinetics in Post Heat-Treatment of 316H Stainless Steel Fabricated by Laser Powder Bed Fusion
Molten Metal Jetting of Al-6061 via Jet-on-Demand Pneumatic Printing
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Novel Spot Scan Strategy for Enhanced Microstructural Control in Electron Beam Powder Bed Fusion of Ti-6Al-4V
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Parameter Selection and Micro/Meso-Material Response: Understanding the Cause-Effect Relationship
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Process Optimization Towards Single Crystal Superalloy Parts in Laser Powder Bed Fusion
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Processing and Microstructure: Localized Control of an Al-Ce-Cu-Zr alloy.
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Tailoring Material Properties via Scanning Strategy of IN939 fabricated by the Powder Bed Fusion-Laser Beam
Tailoring the Microstructure of AA6061 Using Pulsed Laser in Powder Bed Fusion
The effect of scan strategies on 316 grade stainless steel fabricated using laser powder bed fusion
Towards Tailored Microstructure Design in Drop-on-demand Molten Metal Jetting
Ultrasonic Vibration-Assisted Direct Energy Deposition 3D Printing of High-Strength Aluminum Alloys
Understanding Chemical Homogeneity and elemental mixing in Al-Zn Multi-Material Systems through Process Parameter Control of Laser Powder Bed Fusion
Understanding Microstructural Complexity in the Additive Manufacturing of Cobalt-Free Maraging Steels
Understanding the effect build orientation and alloying strategy in microstructure and mechanical behavior of laser metal deposited Duplex stainless steel

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