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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Advances in Titanium Technology
Presentation Title 2024 Institute of Metals Lecture/Robert Franklin Mehl Award: Optimization of Microstructure of Titanium Alloys Processed Using Additive Manufacturing
Author(s) Mohan Nartu, Brian Welk, Srinivas Mantri, Nevin Taylor, Gopal Viswanathan, Rajarshi Banerjee, Narendra Dahotre, Hamish L. Fraser
On-Site Speaker (Planned) Hamish L. Fraser
Abstract Scope When processing Ti alloys using additive manufacturing, the resulting microstructure often exhibits coarse columnar grains (in the direction of deposition) with attendant deficits in properties. The solution adopted involved the application of computational thermodynamics to identify which alloying additions to titanium alloys result in an increase in the freezing range of the given alloy base, such that a columnar to equiaxed transition (CET) may be effected. These alloying additions, mainly eutectoid formers, have been found, at critical concentrations, to cause a CET to occur, resulting in a relatively fine equiaxed microstructure. The amount of solute addition for these elements usually exceeds their solubility limit in the various titanium alloys, and a further effort involving alloy development is required. Two types of alloys are being developed, the first with essentially identical properties as the (given) base alloy, and the second, alloys with enhanced properties. These various efforts will be discussed.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Titanium, Characterization


2024 Institute of Metals Lecture/Robert Franklin Mehl Award: Optimization of Microstructure of Titanium Alloys Processed Using Additive Manufacturing
A New Low-cost, Short-flow and Clean Preparation Process for Ti6Al4V Alloys
Additive Friction Stir Deposition of a Metastable β-titanium Alloy
Additive Manufacturing of Beta Titanium Alloys: Precipitation, Strength, and Strain Hardening Behaviour
Development of a TWIP Beta Titanium Alloy for Additive Manufacturing
Dislocation Micromechanisms in Titanium Micropillar Compression
Effect of Electropulsing on Ti-6Al-4V Fabricated by Selective Laser Melting
Effect of Macrozone-notch Interaction on High Cycle Fatigue in Bimodal Ti-6Al-4V
Effect of Trace Elements for Hydrogen Ingress and Hydride Formation in Commercially Pure Titanium
Effect of β Phase Fraction on Hydrogen Embrittlement in α+β Titanium Alloys
Electropolishing and Roughness Analysis of Additively Manufactured Ti64 With Ethylene Glycol and Sodium Chloride Solutions
Graded Titanium Alloys: Their Manufacture, Characterization, and Modeling
Hollow-strut Titanium Lattice Materials: A Viable Option for Lightweight Engineering
Industry-wide Learning and Perspectives on Management of Cold-dwell Fatigue
Influence of Deformability of Interlayer Metals on Ultrasonic Spot Welding of Commercially Pure Titanium Sheets With Heterogeneous Interface.
Influence of Materials State on Elastic Wave Propagation in Ti-5553
Investigation of the Nanostructures in Deformation Twins in Metastable Beta Titanium Alloys
Laser Powder-bed Fusion (LPBF) Based Additive Manufacturing of Ti-6Al-4V + TiB In-situ Metal Ceramic Composite
Magnetron Sputtering for Advanced Sintering and Alloy Design
Mechanical Property Comparison for Ti6Al4V Titanium Alloy Components Made From Current Additive Manufacturing Processes
Microstructural Manipulation of LPBF Ti-6Al-4V by Hydrogen Heat Treatment
Microstructure and Mechanical Properties of Quenched and Partitioned Ti-6Al-4V
Microstructure and Mechanical Properties of Ti-15Nb-5Sn (at. %) Alloy by Metal Fused Filament Fabrication (MFFF)
Microstructure and Mechanical Properties of Ti-39Nb-6Zr Alloy by Selective Laser Melting Process
Microstructure Evolution during Laser Shock Peening in Titanium
Microstructure Transition Gradients in Next-generation Alloy-Alloy-Composite Titanium AM Aerospace Components
Multiscale Mechanical Behaviours of a Near-alpha Titanium Alloy Made by Additive Manufacturing
Multiscale Model of α/β-phase Coevolution During Thermomechanical Processing of Dual-phase Titanium Alloys
New Hydrometallurgical Technique for Extracting Titanium From Natural Ilmenite
Novel Bainitic Ti Alloys Designed for Additive Manufacturing
Novel Ti-Ta-Zr-Mo Alloys Utilizing Martensite-driven TRIP/TWIP Mechanisms for Cardiovascular Stent Applications
Novel Twinning in Shock Loaded Additive Metastable Ti5553
Optimizing Performance of Ti/h-BN Metal Matrix Composites Through Improved Composition and Spark Plasma Sintering Process
Phase Transformations and Twin Microstructure in Titanium
Pushing the Limits of Strength-ductility Combinations in α+β Titanium Alloys
Rapidly Assessing Strain Rate Sensitivity of Titanium Alloys via Nanoindentation
Role of Texture and Latent Hardening on the Plastic Anisotropy of Ti64 Materials During Uniaxial Loading
Single-crystal Structure Formation of Ti–6Al–2Sn–4Zr–6Mo Alloy in Laser Powder Bed Fusion and Unique Alpha Variant Selection After Beta Annealing
Sinter-based Additive Manufacturing of Titanium
Solid Phase Recycling of Titanium Scrap by Friction Extrusion
Stress-Induced Martensite and Martensite Twinning/Detwinning on the Deformation Behavior of TRIP/TWIP Ti Alloys
The Effect of Thermal Debinding Holding Time on Microstructure and Mechanical Properties of Ti–15Nb–5Sn Alloy by Metal Fused Filament Fabrication (MF³)
Ultrafine Grain Formation and Mechanical Properties in Commercial Pure Titanium Through Thermomechanical Processing Near β Transus Temperature
Ultrastrong Nanotwinned Titanium Alloys Through Additive Manufacturing
Understanding Low Temperature Creep in the Alpha Phase of Titanium

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