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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing of Metals: Fatigue and Fracture
Presentation Title Investigating Strain Localization in Additively Manufactured Ti-alloys Using Experimentally Validated Crystal Plasticity Simulations, Explicitly Accounting for Residual Stresses
Author(s) Kartik Kapoor, Todd Book, Michael D Sangid
On-Site Speaker (Planned) Kartik Kapoor
Abstract Scope Titanium alloys, produced via Additive Manufacturing (AM) techniques offer tremendous benefits over conventional manufacturing processes. However, there is inherent uncertainty associated with their properties, often stemming from presence of residual stresses in the material, preventing their use as critical components. This work investigates Ti-6Al-4V produced via direct metal laser sintering by carrying out crystal plasticity finite element (CPFE) simulations and digital image correlation on samples subject to cyclic loading. A method to incorporate residual stresses via geometrically necessary dislocations is implemented within the CPFE framework. Simulation results match well with digital image correlation and indicate that prior beta boundaries play an important role in strain localization. Possible sites for damage nucleation are identified, which correspond to regions of high plastic strain accumulation. Further, a more robust method to incorporate residuals stresses is proposed and is tested with an available dataset of High-Energy Diffraction Microscopy experiments performed on Ti-alloys.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Printing of Metallic Glasses by Thermoplastic Forming
Accounting for Thermal Process Induced Residual Stress in Additive Manufacturing Based Laser Cladding Repair of High-strength AerMetŪ100 Steel
Additive Manufacturing: Efficient Evaluation of Fatigue Properties Using Short-time Procedures Based on Cyclic Indentation and Physical Quantities
Anisotropic Fatigue Properties of IN718 Produced by Powder Bed Fusion
Creep and Thermomechanical Fatigue of Functionally Graded Inconel 718 Produced by Additive Manufacturing
Effect of Hot Isostatic Pressing on Fatigue Properties of Additively Manufactured Ti-6Al-4V-ELI
Effect of Loading Direction and Heat Treatment on Fatigue Crack Growth Rate of CoCrW Alloy Additively Manufactured by Selective Laser Melting
Evaluation of Tensile and Low Cycle Fatigue Properties of 316 Stainless Using Binder Jetting Additive Manufacturing Technology
Evaluation of the Cyclic Stress-strain Behavior of Additively Manufactured AlSi10Mg
Evaluation of The Mechanical Properties of 15Cr-5Ni Stainless Steel Produced by Direct Metal Laser Sintering
Fatigue Behavior of DMLS IN718 and Ti-6Al-4V through Coupled Modeling and In Situ Experiments
Fatigue Characteristics of Additively Manufactured Aerospace Materials
Fatigue Crack Growth Anisotropy in Selective Laser Melting Produced Alloy 718 at Ambient and Elevated Temperatures
Fatigue of Solid State Additive Manufactured Inconel 625
Fatigue Prediction for AlSi10Mg Parts Produced by Laser Powder-bed Fusion
Fatigue Properties of Ti-6Al-4V Additively Manufactured by Selective Electron Beam Melting
Fatigue Propterties of AlSi10Mg Manufactured by SLM: the Role of Defects
Fracture Characterization of Additive Manufactured Ti-6Al-4V
High Temperature Properties of IN-718: Conventional versus Additively Manufactured
Influence of Build-angle on Charpy Impact Fracture of Laser Powder Bed 3D-printed Stainless Steel and Aluminum Cast Alloy
Investigating Defect Formation Mechanisms in Powder-bed Metal Additive Manufacturing Using Synchrotron-based High-speed X-ray Radiography and Microtomography
Investigating Strain Localization in Additively Manufactured Ti-alloys Using Experimentally Validated Crystal Plasticity Simulations, Explicitly Accounting for Residual Stresses
Mechanical Property and Microstructural Comparison of Additive Manufactured Titanium (Ti64) Lattices
Microstructural Effects on Environmental Assisted Crack Growth Behaviors of Austenitic Stainless Steel by Laser Powder Bed Fusion
MIDAS: Material Informed Digital Design Demonstration for Additive Structures
Relating Defects at the Fracture Surface to Physical Properties of AM Materials
Strength, Fatigue, Fracture, and Microstructure of Additively Manufactured Austenitic Stainless Steel
Study on Dominant factors on Fatigue Strength of Additive Manufactured Ti-6Al-4V Alloy
Tensile and Fatigue Performance Ti-6Al-4V ELI and Non-ELI Material Manufactured by Selective Laser Melting
The 3rd Sandia Fracture Challenge: Blind Predictions of Fracture Performance in Laser Powder Bed 316L
The Influence of Build Orientation on the Thermal Fatigue Behavior of Additively Manufactured AlSi10Mg Coupons
Towards a Predictive Failure Model for Metallic Lattice Materials Manufactured with Laser Powder Bed Fusion

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