Hurley, D.
, Balzar, D.
and Purtscher, P.
(2000),
Nonlinear Ultrasonic Assessment of Precipitation Hardening in ASTM A710 Steel, Journal of Materials Research
(Accessed April 25, 2024)
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Nonlinear Ultrasonic Assessment of Precipitation Hardening in ASTM A710 Steel
Published
Author(s)
, ,
Abstract
We investigated several specimens of ASTM A710 steel containing copper-rich precipitates with variations in the final aging treatment. X-ray diffraction line-broadening and small-angle neutron-scattering experiments revealed the existence of the precipitates and associated coherency strain. We determined the nonlinear ultrasonic parameter Β for each specimen by harmonic-generation experiments and measured the ultrasonic longitudinal velocity ŅL and attenuation αL. Although νL and αL showed no consistent trends, β increased with increasing strain. This correlation is compared to a microstructural model for harmonic generation that includes a contribution from precipitate-pinned dislocations.Citation
Journal of Materials Research
Volume
15
Issue
No. 9
Pub Type
Journals
Keywords
nonlinear acoustics, precipitation hardening, steel, ultrasonic properties
Citation
Created September 1, 2000, Updated February 17, 2017