Abstract
Influence of Ni content in a range 1.3 - 7.6 at.% on amplitude-dependent internal friction and Young's modulus defect of Cu-Ni single crystals oriented for single slip has been studied by composite oscillator technique at frequencies of about 100 kHz in a wide strain amplitude range before, during, and after plastic deformation. The acoustoplastic effect was registered simultaneously with in situ internal friction measurements. Effects of the composition and temperature ranging from 6 to 255 K on damping and anelastic strain was studied and allowed to suggest multicomponent strain amplitude-temperature spectra of the amplitude dependent internal friction. A functional form of the amplitude dependence of the internal friction and Young's modulus defect is discussed. Data on in situ measurements allow to associate the amplitude-dependent internal friction and acoustoplastic effect with different mechanisms: dislocation - point obstacle and dislocation - dislocation interactions, respectively.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.