Single crystal elastic constants of additively manufactured components determined by resonant ultrasound spectroscopy

Rossin, Jeff; Leser, Patrick E.; Pusch, Kira; Frey, Carolina; Vogel, Sven C.; Saville, Alec I.; Torbet, Chris; Clarke, Amy J.; Daly, Samantha; Pollock, Tresa M.

doi:10.1016/j.matchar.2022.112244

Cited by 10 publications

(1 citation statement)

References 51 publications

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“…Due to the capabilities of RUS, it has been used extensively to characterise superalloys [7,8,[13][14][15]. Amongst these studies, the work by Rossin et al [15] demonstrated how computationally enhanced RUS could be used in a framework with electron backscattered diffraction data to determine single crystal elastic moduli, providing an alternative to data collected using a synchrotron.…”

Section: Introductionmentioning

confidence: 99%

Elasticity, acoustic loss and γ′ dissolution in superalloys from resonant ultrasound spectroscopy

Driver,

Markanday,

Christofidou

et al. 2024

Materials Science and Technology

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The high temperature acoustic loss and elastic moduli of the Ni-based superalloys RR1000, Waspaloy, and Allvac® 718Plus™ were investigated using resonant ultrasound spectroscopy. An exponential increase in acoustic loss was seen in all alloys, which was viscoelastic in character with an activation energy of ∼ 200–400 kJ.mol−1, similar to that of the self-diffusion of Ni. The magnitude of the loss was found to be proportional to d−0.85, where d is the grain size. Deviations from the high temperature background were seen in Waspaloy and 718Plus around their γ′ solvus temperatures, attributed to increased diffusion during γ′ dissolution. It is suggested that acoustic loss in Ni-based alloys may be used as a means of determining the γ′ solvus temperatures.

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