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Meeting MS&T22: Materials Science & Technology
Symposium Additive Manufacturing of Titanium-based Materials: Processing, Microstructure and Material Properties
Presentation Title Manipulating Fatigue Life in L-PBF with Contour Control
Author(s) Christian Gobert, Austin Ngo, David Scannapieco, John Lewandowski, Jack Beuth
On-Site Speaker (Planned) Christian Gobert
Abstract Scope Poor fatigue life of laser powder bed fusion (L-PBF) components limits complete adoption for aerospace applications. Contour scan vectors in L-PBF print at or near the free surface of parts, a fatigue critical zone, and can therefore influence component fatigue life.In this research the influence of developed contour strategies on TiAl6V4 4-pt bend fatigue specimens is studied. Designed contour strategies were parameterized with respect to remelt width-into-part and depth, defining a contour remelt zone. Cross-section optical microscopy was used to observe porosity content of contour remelt zones. To isolate the impact of contour selection and remelt zone size on fatigue life,various surface finishes and infill strategies were incorporated during testing.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A-16: Characteristics of Ti-6Al-4V Component Fabricated by Laser Powder Bed Fusion Process
A-17: Linking Processing Conditions to Defect Structures, Microstructure, and Mechanical Behavior in Ti-6Al-4V Fabricated by Laser Powder Bed Fusion
Additive Manufacturing of Titanium – Boron Carbide In-situ Composites
Application of Extreme Value Analysis to Defect Size Distributions for Fatigue Life Prediction of Laser Powder Bed Fusion Processed Ti-6Al-4V
Controlling Aluminum Vaporization in EBM Ti-6Al-4V through Scan Strategy
Direct-Ink Writing of Hierarchically Porous Titanium for Enhanced Osseointegration
Effect of Interlayer Delays on the Microstructure and Properties of As-built Ti64 Parts in Direct Energy Deposition Process
Effect of Processing Parameters on Texture Evolution of Laser Powder Bed Fusion Processed Hydride-Dehydride Ti-6Al-4V Powder
Effect of Surface Finish on Fatigue Behavior of Laser Powder Bed Fusion Processed Hydride-Dehydride Ti-6Al-4V Powder
Effects of Process Parameters on Fatigue Behavior and Defect Characteristics in LPBF Ti-6Al-4V
Effects of Scan Strategies on Residual Stresses in Laser Powder Bed Fusion Ti-6Al-4V
Hybrid Strategies to Increasing the Throughput of Electron Beam Selective Melting of Ti-alloys
Influence of Substrate Condition and Initial Residual Stresses on Wire Fed Electron Beam Additive Deposition
Manipulating Fatigue Life in L-PBF with Contour Control
Modeling and Characterizing the Effects of Keyhole Porosity on Simulated Ti-6Al-4V Powder-Bed Fusion Microstructures
Modelling the Additive Manufacturing of a Titanium-based Hip Implant
Powder Bed Processing of Ti6Al4V: Comprehensive Process-Microstructure-Properties Analysis
Process Window Approach for Qualification of Laser Powder Bed Fusion
Role of Build Orientation and Layers on Microstructure and Multi-scale Mechanical Properties of Wire Arc Additive Manufactured Commercially Pure Titanium
Spatially Resolving Structure-Behavior Relations in Additive Manufactured Adaptive Materials
Stress State Dependent Fracture Behavior of Additively Manufactured Ti-6Al-4V Containing Internal Flaws
Transmission Electron Microscopy Analysis of Cellular Structure of Laser Processed Metastable Ti-Nb Alloy

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