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Meeting 2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
Symposium 2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
Presentation Title Understanding the Effect of Retained Austenite on Mechanical Properties of Additive Manufactured 1.2709 Grade Maraging Steel
Author(s) Johny Varghese, Robert Brandt
On-Site Speaker (Planned) Johny Varghese
Abstract Scope Maraging steels are notable for their low carbon content and exceptional combination of ultra-high strength, ductility, machinability, dimensional stability, and fracture toughness. They hold promise for use as spring steel in sectors like automotive and food. Additive manufacturing (AM) offers a more cost-efficient method for creating complex geometries with precise control over microstructure, mechanical properties, and corrosion resistance, all within shorter production times. Mechanical properties are significantly affected by the presence of retained austenite (RA) and reversed austenite. Although considerable research has focused on the relationships between input parameters and output parameters, the specific effects of RA and reversed austenite on mechanical properties remain underexplored. This study presents initial findings on the additive manufacturing of maraging steels of 1.2709 grade for lightweight applications. The mechanical properties of the samples are analyzed, and the impact of RA content on mechanical property is also discussed and correlated.
Proceedings Inclusion? Planned: Post-meeting proceedings

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Understanding the Effect of Retained Austenite on Mechanical Properties of Additive Manufactured 1.2709 Grade Maraging Steel
Understanding the Feasibility of Using NiTi55 Interlayer for Ti6Al4V-18Ni Maraging Steel Multi-Metal Deposition in L-PBF
Use of In-Situ Thermography to Study Scan Strategy for Laser Foil Printing of Metallic Glass
Using Acoustic Signals For Torch-to-Bead Distance Estimation and Closed-Loop Control in Wire Arc Additive Manufacturing
Using Coaxial Melt Pool Images to Construct In-Process 3D Volume Model in Powder Bed Fusion Additive Manufacturing
Using Machine Learning-Based Process Map to Guide Evaluation of Inconel 625 Mechanical Properties in Laser Foil Printing
Vat Photopolymerization of Ultra-Soft Polymer Foams
Vision-Based Calibration of Robotic 3D Printers for Cooperative 3D Printing
Volumetric Medical Models: Direct Imaging to Functional 3D Prints
Wire Arc Additive Manufacturing Benefits and Challenges: A Survey
Wire Arc Additive Manufacturing Development for Aluminum 6061 RAM
Wire Arc Additive Manufacturing of a Large Scale, High Aspect Ratio, Multi-Material Part
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