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Meeting 2019 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing of Metals: Fatigue and Fracture III
Presentation Title The Role of As-printed Defects and Microstructural Heterogeneities in EBM-PBF Ti-6Al-4V: Tensile Testing and Characterization at Appropriate Length Scales
Author(s) Nik Hrabe, Jake Benzing, Li-Anne Liew, Ryan M. White, Frank W DelRio
On-Site Speaker (Planned) Nik Hrabe
Abstract Scope Inherently, additively manufactured (AM) processes produce defects, anisotropy and heterogeneities in the microstructure of metal parts. In the current work on Ti-6Al-4V (manufactured using electron beam melting powder bed fusion), mini-tensile specimens are used to measure the influence of build orientation (horizontal vs. vertical) and heat treatment (as-built vs. hot isostatic pressing) on tensile properties. The role of defect content, grain size and texture will be discussed. Building on this work, meso-scale tensile specimens with gauge dimensions on the order of a few hundred microns were extracted from as-built parts. Meso-scale testing enables tracking of specific microstructural features that form along prior- grain boundaries and sub-surface defects (pores and lack-of-fusion zones) throughout the entire gauge length, before and after deformation. The coupling of non-destructive characterization techniques with meso-scale mechanical testing is necessary to evaluate the role of as-printed defects and microstructural heterogeneities at an appropriate length scale.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A-35: Effect of Adding Yttrium on the Inclusion Modification and Impact Toughness of E36 Shipbuilding Steel
A Data-driven Approach to Investigate the Influence of Process Parameters on Fatigue Life of Additively Manufactured Metals
A Microstructural Investigation on the Crack Initiation Behavior of an Additively Manufactured Austenitic Stainless Steel
A New Perspective on Visualizing the Elastic Limit and the Necessity of 6D Limit Hypersurfaces
A Statistical Framework to Qualify the Low Cycle Fatigue Performance of Additively Manufactured Steel Replacement Parts
A Summary of NASA’s Efforts for the Development of Additive Manufacturing Metallic Materials
About a Digital Twin for the Fatigue Approach of Additively Manufactured Components
Additive Materials Behavior: Fatigue Case Studies
Criticality of Porosity Defects on the Fatigue Life of Wire + Arc Additive Manufactured Titanium Alloy
Effect of Heat Treatments on Fatigue Properties of Ti-6Al-4V and 316L Produced by Laser Powder Bed Fusion in as Built Surface Condition
Effect of Internal Hydrogen on the Mechanical Behavior of Additively Manufactured Stainless Steels
Effect of Laser Shock Peening Processing Parameters on the Microstructure, Residual Stress, and Fatigue Behavior of Additive Manufactured CoCr Alloy
Effect of Microstructure and Defects on the Fatigue Performance of Additively Manufactured 2205 Duplex Stainless Steel
Effect of Microstructure and Internal Defects on the Cyclic Deformation and Damage Behavior in Additively (SLM) Manufactured Al-Si Alloys
Effect of the Surface Finish on the Cyclic Behavior of Additively Manufactured AlSi10Mg
Effects of Hot Isostatic Pressing Temperature on the Static and Dynamic Properties of Selective Laser Melted Ti-6Al-4V Solid Material
Evolution of Defect Characteristics During In Situ Tensile Loading of a Laser Powder Bed Fusion Processed 316L Stainless Steel Alloy: A Synchrotron X-ray Tomography Study
Exploring the Effect of Size on IN718 Parts Produced by Powder Bed Fusion
Fatigue Assessment of Additively Materials by Means of the Local Strain Energy
Fatigue Behavior of Aluminum Alloys Fabricated by Solid-state Additive Manufacturing
Fatigue Crack Growth Properties of Selective Laser Melting Produced Alloy 718 at Ambient and Elevated Temperatures
Fatigue Crack Initiation and Growth Behavior in Additively Manufactured 17-4 PH Stainless Steel
Fatigue Life Prediction of Additively Manufactured IN718 Using Crystal Plasticity Modeling with Experimental Validation
Finite Element Failure Analysis of Lattice Structures
Fracture Toughness and Fatigue Strength of Selective Laser Melted Aluminium-Silicon: An Overview
Implications of Post-processing Induced Microstructural Changes on the Deformation and Fracture Behavior of Additively Manufactured Ti6Al4V Alloy
Influence of Process Parameters on Fracture Toughness of AlSi10Mg Alloy Fabricated through Laser Beam Melting
Investigating Local Microstructure Response During Crack Initiation and Propagation in DMLS IN718 Subjected to High Cycle Fatigue Loading
Manipulation of Defects, Crystallographic Texture and Tensile Properties in Additively Manufactured Ti-6Al-4V Parts
Mechanical Testing Results from MIDAS: Material Informed Digital Design Demonstration for Additive Structures
Multiaxial Fatigue Analysis of Additively Manufactured 17-4 PH Stainless Steel Notched Specimens
Non-destructive Mechanical Testing of Additive Manufactured Materials
Predicting the Integrity of Additively Manufactured Nickel Alloys
Qualification Research and the Effects of Defects Studies in Laser Powder Bed Fusion of AlSi10Mg
Role of Multi-scale Microstructural Features in Tensile, Compressive, Fatigue, and Fracture Behavior of Direct Metal Laser Sintered Inconel-718
Sources of Scatter in the Fatigue Behavior of Ti-6Al-4V Fabricated via Electron Beam Melting
Surface Roughness Effects on Rotating-bending Fatigue Behavior of Additive Manufactured Stainless Steel 316L
Tensile, Compressive, Cyclic, and Fracture Behavior of Direct Metal Laser Sintered Ti64
Tensile, Creep and LCF Behavior of SLM Fabricated Inconel 718 in As-fabricated and HIPed Conditions
The Effect of Heat Treatment and Alloying of Ni-Ti Alloy with Copper on Improving Its Fatigue Life
The Effects of Microstructure and Material Length Scales on the Fatigue Crack Growth Rates for Thin Wall Additive Manufactured Components
The Effects of Powder Recycling on the Mechanical Properties of Additively Manufactured Materials
The Relationship of Processing Parameters to Surface Roughness and Fatigue Life in Additive Manufacturing
The Role of As-printed Defects and Microstructural Heterogeneities in EBM-PBF Ti-6Al-4V: Tensile Testing and Characterization at Appropriate Length Scales
Why 3D-printing at the Beach is not the Perfect Work-life Balance: Some Observations on Moisture Effects in Metal Powders

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