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Meeting 2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
Symposium Materials
Presentation Title A Comparative Study on the Microstructure and Texture Evolution of L-PBF and LP-DED 17-4 PH Stainless Steel during Heat Treatment
Author(s) Pooriya Nezhadfar, Paul R. Gradl, Shuai Shao, Nima Shamsaei
On-Site Speaker (Planned) Pooriya Nezhadfar
Abstract Scope This study aims to characterize the microstructure and crystallographic texture of 17-4 PH stainless steel (SS) manufactured via laser directed energy deposition (L-DED) and laser powder bed fusion (L-PBF), in both non-heat treated and heat treated conditions. It is found that the non-heat treated L-DED 17-4 PH SS possesses coarse columnar ferrite grains decorated with Widmanestatten ferrite grains, whereas the L-PBF counterpart has very fine and mostly equiaxed ferrite grains along with lath martensite. An identical stress relief (SR) temperature is obtained for both the L-PBF and L-DED 17-4 PH SS specimens based on the phase diagrams generated using Thermo-Calc. software. The SR step prior to CA-H1025 heat treatment resulted in texture weakening, and refined the grain structure to some extent. The non-heat treated L-PBF 17-4 PH SS specimen possesses strong cube and γ-fiber textures, while the texture transfers to a weaker γ-fiber components after performing CA-H1025 heat treatment.
Proceedings Inclusion? Definite: Post-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Combinatorial Approach of Alloy Modification and Heat Treatment Strategies, Towards a Tailored Microstructure with Improved Mechanical Properties of Hot Work Tool Steel
A Comparative and Experimental Study on the Effect of Heat Treatment Cycles for PBF Ti6Al4V
A Comparative Study on the Microstructure and Texture Evolution of L-PBF and LP-DED 17-4 PH Stainless Steel during Heat Treatment
A Control of Surface Quality in Selective Laser Sintering Additive Manufacturing with Reclaimed Polyamide Materials
A High Throughput Additive Manufacturing and Characterization Approach for Evaluating Structure-property Relationships in Multiphase High Entropy Alloys
Additive Manufacturing of Magneto-active, Shape Programmable Thermoset Composite Laminates via Reactive Extrusion
Additively Manufactured Hastelloy-X: Effect of Post-process Heat Treatment on Microstructure and Mechanical Properties
Additively Manufactured Haynes 230 by Laser Powder Direct Energy Deposition (LP-DED): Effect of Heat Treatments on Microstructure and Tensile Properties
An Initial Evaluation of Process-property Relations for FDM produced 316L Stainless Steel
Analysis of Horizontally Graded Titanium-Tantalum Using Laser Powder Bed Fusion Additive Manufacturing
Analysis of Residual Stress Reduction of in situ Annealed LPBF 316L Stainless Steel
Analysis of Residual Stress Reduction of In Situ-Annealed AM 316L Stainless Steel
Binder-free Additive Manufacturing of Ceramics Using Hydrothermal-assisted Transient Jet Fusion
Ceramic Binder Jetting Additive Manufacturing: Effects of Granulation on Properties of Feedstock Powder and Printed and Sintered Parts
Ceramic On-demand Extrusion (CODE) of Zirconium Diboride
Challenges during laser powder bed fusion of a near-alpha titanium alloy - Ti-6242Si
Characterization of Copper Coupons Made via Laser Powder Bed Fusion
Characterization of n-type Bismuth Telluride Manufactured via Selective Laser Melting
Characterizing Internal Porosity of 3D-printed Fiber Reinforced Materials
Comparison of Component Properties and Economic Efficiency of the Arburg Plastic Freeforming and Fused Deposition Modeling
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Directed Energy Deposition Additive Manufacturing of Nickel Aluminum Bronze: Temperature Dependent Properties for Predicting Distortion
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Dry Aerosol Deposition of Silicate Coatings on Space Relevant Polymeric Substrates
Effect of Heat Treatment on the Tensile Behavior of 17-4 PH Stainless Steel Additively Manufactured by Metal Binder Jetting
Effect of powder characteristics on tensile properties of additively manufactured 17-4 PH stainless steel
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Effects of Build Orientation and Heat Treatment on Neutron Irradiation Hardening in Inconel 625 Fabricated via Laser Powder Bed Fusion
Effects of Fiber Length Evolution in Carbon Fiber-reinforced Epoxy Composites for Direct Ink Writing
Effects of Heat Treatment and Fast Neutron Irradiation on the Microstructure and Microhardness of Inconel 625 Fabricated via Laser-Powder Bed Fusion
Effects of Powder Reuse and Spatial Location Dependency on the Powder Characteristics and Defect Structure of Additively Manufactured Ti-6Al-4V Parts
Effects of Stripe Width on the Porosity and Mechanical Performance of Additively Manufactured Ti-6Al-4V Parts
Electron Beam Selective Melting of IN738LC Alloy; Defects Control, Microstructural Characterization and Mechanical Properties
Energy Density Effect on the Keyhole and Lack of Fusion Porosity during Laser Powder Bed Fusion Process
Evaluating the Effect of Z-pinning parameters on the Mechanical Strength and Toughness of Printed Polymer Composite Structures
Evaluating the Efficacy of X-ray Computed Tomography for Flaw Detection in Laser Powder Bed Fusion Additive Manufacturing using Automated Optical Serial Sectioning
Evaluation of Early Fatigue Damage Detection in Additively Manufactured AlSi10Mg
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Exploring the Structure-property Relationships of (Ti, TiAl6V4)xCoCrFeMnNi Graded High Entropy Alloy
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Flowability Measurements of Different SLS Materials at Elevated Temperatures with a Modified Schulze Ring Shear Tester
Fracture Behavior of FDM Polymer Materials: Impact of Sample Size, Notch, and Element Layout
Generation and Characterization of Parameter- and Process-induced Defects in Powder Bed Fusion Additive Manufacturing, and Impact of Mechanical Properties Thereof
Geometry Limitations of Indirect Laser Sintering of Alumina
Improving Vat Photopolymerization Part Performance via Thermally Activated Bond Exchange
Increasing Productivity in Laser Powder Bed Fusion Additive Manufacturing of AlSi10Mg
Influence of Process Conditions on the Thermal Conductivity of Selective Laser Melted AlSi10Mg
Inkjet Printing Graphene for Devices: From Contacts to Functional Layers
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Investigation of Mechanical Properties of Parts Fabricated with Gas- and Water-atomized 304L Stainless Steel Powder in the Laser Powder Bed Fusion Process
Investigation Towards AlSi10Mg Powder Recycling Behavior in the LPBF Process and Its Influences on Mechanical Properties
Laser Powder Bed Fusion Additive Manufacturing of Copper Vapor Chambers
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The Effect of Fused Filament Fabrication Thermal Post-Processing Conditions on the Mechanical Strength and Dimensional Accuracy on ULTEM® 1010
The Effect of Stress Intensity Factor on Fatigue Life of Additive Manufactured Parts Made from Polymer
The Influence of Grain Size Distribution of PA12 on Key Steps of the Polymer Laser Sintering Process
The Laser Powder Bed Fusion Process Development of 17-4 PH Stainless Steels With Pulsed-Wave Lasers
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