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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Advances in Titanium Technology
Presentation Title Micromechanical Fracture Behavior of Distinct Interfaces in an Intermetallic TiAl Alloy
Author(s) Michael Burtscher, Markus Alfreider, Klemens Schmuck, Helmut Clemens, Christoph Gammer, Daniel Kiener
On-Site Speaker (Planned) Michael Burtscher
Abstract Scope The applicability of modern TiAl alloys is limited by their low ductility and fracture behavior at ambient temperatures. This is governed by different interface strengths and the effect of alloying elements on the respective interfacial fracture properties. In this study, fracture toughness and J-integral of selected interfaces of a C and Si-doped TNM alloy are determined by notched micro cantilever experiments. Additionally, strains along these interfaces were measured using 4D-STEM microscopy. The crack propagation was analyzed by complementary continuous stiffness measurements and computer vision techniques. This allows to follow the current crack propagation through distinct lamellae or grains as well as along different interfaces during the in-situ fracture experiments. This enabled us to identify the influence of the crack path on the presence of interfacial strains due to misfit dislocations or segregated dopant elements. Furthermore, the effect of ζ-Ti5Si3 silicides on the fracture behavior for α2/γ interfaces was determined.
Proceedings Inclusion? Planned:
Keywords Mechanical Properties,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Comparative Study on Mechanical Properties of Additively Manufactured Titanium Alloys
A Novel High-strength Beta Titanium Alloy Reinforced by Nanoscale Intermetallic Precipitates
A Review on Impact Resistance of Partially Filled 3D Printed Titanium Matrix Composite Designed Aircraft Turbine Engine Fan Blade
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
Defect Engineering for Heterogeneous and Adaptive Microstructures
Design and Characterization of New Metastable β Ti-Mo-Zr-Sn Alloys for Biomedical Applications
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
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
Exploring Sub-stoichiometric Titanium Hydride Phase Space via Vacuum Hydrogen Annealing, X-ray Diffraction, and Combined Thermogravimetric Analysis/Mass Spectroscopy
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
M-1: About Dislocation Density Distribution in Titanium Alloys after Hot-deformation in the α + β Domain
M-2: Anisotropy in Tensile Properties of Ti-10V-2Fe-3Al Metastable β Alloy : An Effect of the β Structure
M-4: Microstructural Evolution and Mechanical Properties of Additively Manufactured Commercially-pure Grade 2 Titanium after Post-process Heat Treatment
M-5: Microstructure in the Selective Laser Melted Ti-48Al-2Cr-2Nb Alloy
M-7: Young Modulus and Micro-characterization of Ternary Titanium Alloys for Biomedical Applications
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 ß Titanium Alloys by Additive Friction Stir Deposition
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, 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 Strain-transformable Titanium Alloys Displaying Combined TRIP and TWIP Effects: From Design Approaches to Deformation Mechanisms
NOW ON-DEMAND ONLY - Enlarging the Palette of Mechanical Properties of TI64 by a Quenching and Partitioning Approach
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
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
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