Ultrasonic Characterization of Spatially Varying Material Properties in Metal Components Fabricated by Additive Manufacturing

Conference · Tue Oct 01 00:00:00 EDT 2019

DOI:https://doi.org/10.1109/ULTSYM.2019.8925559· OSTI ID:2568638

Walton, Kenneth; Skliar, Mikhail

We investigated the sensitivity of ultrasonic measurements to changes in the operating conditions during additive fabrication for 316L stainless steel samples by selective laser melting. We found that the velocity of the ultrasound propagation positively correlates with the energy density used to melt layers of metal powder during the fabrication. In the range of the investigated conditions, the faster ultrasonic propagation, observed with the increase in the energy density, was shown to correspond to the improved hardness and the modulus of 316L stainless steel. Overall, our results indicate the feasibility of ultrasonic characterization of heterogeneities in the material properties of metal components produced by additive manufacturing.

• Research Organization: University of Utah
• Sponsoring Organization: National Energy Technology Laboratory
• DOE Contract Number: FE0031559; FE0031559
• OSTI ID: 2568638
• Country of Publication: United States
• Language: English