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Meeting MS&T23: Materials Science & Technology
Symposium Phase Transformations and Microstructure Evolution during Post-Processing of Additively Manufactured Metals
Presentation Title Microstructure and Mechanical Characterization of As-deposited and Forged Wire Arc Additively Manufactured (WAAM) 316LSi
Author(s) Brett E. Ley, Vishnu Ramasamy, John Lewandowski
On-Site Speaker (Planned) Brett E. Ley
Abstract Scope Wire Arc Additive Manufacturing (WAAM) is a near net shape solution for printing large-scale metal components. Four distinct thick wall deposits of 316LSi Stainless Steel were printed using WAAM where the heat input and interpass temperature were systematically varied. From each thick wall deposit, several tension and fatigue crack growth (FCG) samples were machined along the x, y, and z directions and tested. The as-deposited microstructures and fracture surfaces were examined from three orientations. Characterization techniques included optical metallography for the microstructure and a combination of SEM and optical profilometry for the fracture surfaces. The effect of WAAM print conditions on the microstructural and FCG characteristics will be summarized. As-deposited materials were also forged to examine the effects of novel post-processing on the microstructures and some mechanical properties.


Additive Manufacturing of 718 Ni ODS Alloys and Haynes 230 Alloys with Nanoprecipitates
Impact of Heat Treatment Rates on Phase Transformation in Additively Manufactured Gamma Prime Superalloys IN738LC
Influence of Post-process Forging on Microstructure and Properties of LPBF AlSi10Mg
Influence of Post Processing Annealing on Precipitation and Deformation Behavior of Additvely Processed Beta Titanium Alloys
Laser Reheating and Polishing of Powder-blown Directed Energy Deposition
Microstructural Evolution of One and Two Step Heat Treatments on Electron Beam Powder Bed Fusion Fabricated Haynes 282
Microstructure and Mechanical Characterization of As-deposited and Forged Wire Arc Additively Manufactured (WAAM) 316LSi
Microstructure Engineering of Specialty Alloys via Post Advanced Manufacturing Thermal Treatments
Observation of Structure Coarsening During Annealing of Additively Manufactured Ti-6Al-4V
Tuning the Precipitate Microstructure in the Selective Laser Melted Ti-6Al-2Sn-4Zr-2Mo Alloy via Post Heat Treatment
Understanding the Microstructure Evolution Pathway During the Post Heat Treatment in the Direct Energy Deposited Ti-5Al-5Mo-5V-3Cr Alloy
Use of In Situ TEM Heating to Study Transformation Pathways for Metastable Phases in New Candidate Alloys for Additive Manufacturing

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