Measurements of the second-order elastic constants of powder-bed fusion 17-4 PH AM steel using ultrasound (Withdrawal Notice)

Additive manufacturing (AM) of metals has drawn attention by both researchers and industries in recent decades for replacing aspects of conventional steel fabrication due to lessened cost and higher production flexibility. However, the characterization of the properties of AM steel remains scarce. This paper presents the ultrasonic determination of the second-order elastic constants of 17-4 PH steel produced using powder bed fusion AM. Both longitudinal and shear wave phase velocities are used to solve for the elastic constants. The present values of second-order elastic constants are compared with traditionally manufactured 17-4 PH. Porosity effects on second-order elastic constants of additive-manufactured 17-4 PH steel are also analyzed.