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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Advances in Titanium Technology
Presentation Title Microstructure in the Selective Laser Melted Ti-48Al-2Cr-2Nb Alloy
Author(s) Dian Li, Wenrui Zhao, Xing Zhang, Yiliang Liao, Yufeng Zheng
On-Site Speaker (Planned) Dian Li
Abstract Scope Additive manufacturing opens new avenues for manufacturing the near-net-shape TiAl components with complex geometries, which serve as a promising structural material for aerospace applications. Our recent study indicated that decorating the additive manufacturing powders with graphene oxide sheets can help solve the cracking issue associated with select laser melting of Ti-48Al-2Cr-2Nb (at.%, Ti-4822). In this presentation, we will introduce our 3D characterization using FIB-SEM tomography to study the microstructural evolution and the defect formation during select laser melting of Ti-4822 and graphene oxide added Ti-4822. We observed micro-scale cracks and sub-micron pores in different morphologies in the as-printed Ti-4822 but only nano-scale pores with dramatically reduced size and number density in the graphene oxide added Ti-4822. The experimental data collected from 3D FIB-SEM tomography revealed that graphene oxide can improve the manufacturability of Ti-4822.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Titanium, Characterization


A Comparative Study on Mechanical Properties of Additively Manufactured Titanium Alloys
A novel high-strength beta titanium alloy reinforced by nanoscale intermetallic precipitates
About dislocation density distribution in titanium alloys after hot-deformation in the α + β domain
Anisotropy in tensile properties of Ti-10V-2Fe-3Al metastable β alloy : an effect of the β structure
Anomalous c+a Dislocation Activity in TIMETAL-407
Assessing The Variability In Mechanical Properties Of Biocompatible Ti-13Nb-13Zr Titanium Alloy With Respect To Thermomechanical Treatments And Associated Microstructures.
Beta Ti alloys with increased oxygen content and TRIP/TWIP effect
Characterization and slip of <a> screw dislocation in pure hcp α titanium from atomistic simulations
Characterization of Nanoscale Metastable Phases in a TRIP Titanium Alloy
Critical comparison of estimation of critical resolved shear stress from slip line trace analysis and spherical indentation protocols and Bayesian learning techniques for Ti 6Al-2Sn-4Zr-2Mo and Ti 6Al-2Sn-4Zr-6Mo alloys
Cu solubility extension in TiNiCu shape memory alloy for low-fatigue elastocaloric material
Defect Engineering for Heterogeneous and Adaptive Microstructures
Design and Characterization of New Metastable β Ti-Mo-Zr-Sn Alloys For Biomedical Applications
Design and enhancing biocompatibility of beta Titanium alloy via electro-discharge treatment
Developing new metastable beta-titanium alloys and optimizing their properties through heat-treatments
Development of a Phenomenological Equation to Predict Yield Strength in Additively Manufactured Ti-5Al-5V-5Mo-3Cr
Development of TiAl alloys for high temperature applications
Effect of aging treatment on microstructure and superelastic properties of a high Zr-containing Ti–Zr–Nb–Sn shape memory alloy
Effect of Sn on texture characteristics and superelastic behavior of β-type Ti-30Zr-10Nb-xSn (x = 0, 2, 3, 4) texture alloy
Enlarging the palette of mechanical properties of TI64 by a quenching and partitioning approach
Exploring Sub-Stoichiometric Titanium Hydride Phase Space via Vacuum Hydrogen Annealing, X-ray Diffraction, and combined Thermogravimetric Analysis/Mass Spectroscopy
Exploring the plasticity of beta phase strengthened by fine scale, multivariant alpha.
Fatigue Behavior of Additively Processed, PVD Coated Ti-6Al-7Nb Alloy for Biomedical Applications
Formation of {11-22} contraction twins in titanium through reversible martensitic phase transformation
Grain boundary segregation and its implications regarding the formation of the grain boundary α phase in the metastable β-Titanium Ti–5Al–5Mo–5V–3Cr alloy
Heterogeneous and cooperative deformation in two-phase titanium alloys: slip initiation, transfer, and their effects on strain localization
Hierarchical α Microstructure in a Metastable β Ti-5Al-5Mo-5V-3Cr Alloy
High-temperature oxidation behavior of dilute Ti-Si alloys at 800 °C
In-Situ Synchrotron X-Ray Diffraction of High Strain Rate Deformation of TRIP/TWIP Ti-Mo Alloys
Local Distortion Effects on the Dynamic Lattice Stability in the BCC Phase of Titanium and its Alloys: An Ab-initio Study
Mechanical behavior of Ti-Ni-Fe based B2 Pseudo Binary intermetallic at different length scales
Mechanical behavior of Ti alloys in relation to the microstructure across lengthscales
Micromechanical fracture behavior of distinct interfaces in an intermetallic TiAl alloy
Microstructural and Mechanical Properties Structural Repairs of near α and near Titanium Alloys by Additive Friction Stir Deposition
Microstructural evolution and mechanical properties of additively manufactured commercially-pure Grade 2 Titanium after post-process heat treatment
Microstructural Scale Evolution of Titanium Alloys during Additive Manufacturing
Microstructure Evolution in Additively Manufactured Ti-5Al-5Mo-5V-3Cr Alloy
Microstructure Formation in Titanium Alloys
Microstructure in the Extrusion-Based 3D Printed Biomedical Used Ti-6Al-4V
Microstructure in the Selective Laser Melted Ti-48Al-2Cr-2Nb Alloy
Microstructure, transformation behavior and superlasticity of an aged Ti-40Ni-12Cu (at. %) shape memory alloy
Modeling local stress states near microtextured regions in Ti64 and implications on dwell fatigue life.
Monte Carlo Simulations for Texture-Controlled Grain Growth During Beta-Annealing of Ti-6Al-4V
Multiscale Modeling of Metal-Hydrogen Interactions: A Case Study of Hydride Formation in Titanium
New insights into oxygen-rich alpha titanium alloys for structural applications
Origin of enhanced ductility in TiAl alloys caused by reducing activation difference of deformation mechanism of γ-phase
Plastic strain delocalization via {10-12} twin transmission in an (α+β) titanium alloy
Preparation of TiAl alloy by magnesium aluminum synergistic reduction of TiO2 in molten salt medium
Role of Defects in Alpha Precipitation in Metastable Beta Ti-5Al-5Mo-5V-3Cr Alloy
Strengthening of Ti-6Al-4V/TiC Composites
Surface Analysis, Microstructure Characterization, and ISV modeling of Electron Beam Melted (EBM) Ti-6Al-4V
The Effect of Sample Size and Plastic Behavior on the Validity of Sub-scale Mechanical Testing of Titanium Alloys
The formation of titanium ultrafine laminar microstructures via additive manufacturing
The influence of Fe and Al on the microstructure and mechanical performance of Ti-Cr alloys
The Intermediate Temperature Mechanical Behaviour of a near-α Titanium Alloy: Experiments and Modeling
Thermohydrogen Refinement of Microstructure of AM Titanium Components
Thermohydrogen Refinement of Microstructure (THRM) to Improve the Performance of Material Extrusion Additively Manufactured Ti-6Al-4V
Titanium metal matrix composites via selective laser melting
Towards Sub-nanometer Scale Characterizing the ‘Real’ H in Titanium Alloy ---Importance of Combined Cryogenic Focused Ion Beam & Atom Probe Tomography Technique
Transformations in TRIP/TWIP Ti alloys studied via in-situ methods
TRIGGERING NEW DEFORMATION MECHANISMS IN Ti ALLOYS BY HEAT TREATMENTS: a step forward into the improvement of the ductility and work-hardening of 3D printed parts
Tuning elastic properties of ω-phase to engineer high strength-ductility β-Titanium alloys
Twins in Ti under different loading conditions
Using Defects to Inform on Physical Phenomena in EBM Ti-6Al-4V Across Scanning Strategies
Young Modulus and Micro-Characterization of ternary titanium alloys for biomedical applications
β-titanium bcc-superalloys with reinforcement by β' ordered bcc TiFe precipitates
⍺ Phase Growth and Branching in Titanium Alloys

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