About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing Fatigue and Fracture V: Processing-Structure-Property Investigations and Application to Qualification
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Presentation Title |
Ultrasonic Nondestructive Characterization of Hybrid Additively Manufactured 420 Stainless Steel |
Author(s) |
Luz D. Sotelo, Cody S. Pratt, Haitham Hadidi, Michael P. Sealy, Joseph A. Turner |
On-Site Speaker (Planned) |
Luz D. Sotelo |
Abstract Scope |
Hybrid additive manufacturing (AM) processes enable the creation of functionally graded components for which the variation in material properties is achieved through the synergized combination of manufacturing processes and/or energy sources. To date, examples of nondestructive evaluation (NDE) in hybrid AM are limited, and their sensitivity to these functional gradients is currently unclear. Here, 420 stainless steel samples are considered. A comparison is made between a sample manufactured using a hybrid AM process that incorporated directed energy deposition (DED) and laser peening with a sample created by DED alone and a wrought sample. The hardness profile and ultrasonic phase velocity, attenuation, and diffuse backscatter responses were measured across the axial (build) direction of the samples. Laser, optical and SEM micrographs were obtained for qualitative verification. The results show excellent agreement between destructive and nondestructive measurements, highlighting the potential of ultrasonic methods for the efficient characterization of hybrid AM components. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Characterization, Iron and Steel |