Abstract
Ultrasonic velocity and attenuation measurements have been carried out on the as-received and thermally treated 8090 Al–Li alloys (T8771). Ultrasonic velocities, density and elastic moduli show a maximum at the thermally treated temperature of 463 K due to the influence of δ′ phase precipitation. The decrease in velocity beyond 463 K is associated with the initiation of dissolution of δ′ and δ phases and also the presence of small fraction of S′ phase. Overaging could be identified at 673 K from the changes in ultrasonic velocities and attenuation. The observed pronounced maxima in ultrasonic velocities and minima in attenuation at 470 and 593 K are associated with precipitation of δ′ and S′ phases, respectively.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
