Abstract
Low temperature β internal friction peak evolution upon thermal cycles shows two peculiar peaks similar to high temperature internal friction peak. The modulus softening associated to these peaks suggest a phase transformation phenomenon and the relaxation time τo in order of 10 -23 -10 -35 s, close to that observed in grains boundary sliding are due to interface motions in the amorphous structure under combined thermal and mechanical energies.
Highlights
Metallic glassy materials undergo anelastic relaxation phenomena as polymer with a low temperature internal friction (IF) β peak and high temperature internal friction α peak [1]
The purpose of this paper is to describe the complex relaxation in metallic glasses using the peculiar anelastic phenomena in Zr57Cu20Al10Ni8Ti5 BMG
The complex relaxation is likely a composition of single atomic diffusion and interface motions similar to grain boundary sliding that is consistent with the high-activation energies and the low-relaxation times
Summary
Metallic glassy materials undergo anelastic relaxation phenomena as polymer with a low temperature internal friction (IF) β peak and high temperature internal friction α peak [1]. The latter occurs in the temperature range of the glass transition and crystallization of the glassy structure and usually exhibit anomalous relaxation time about τo=10-23–10-35s [2]. ‘unreasonably’ low compared to that of the atomic diffusion relaxation time (10-13s) are usually observed in cold-worked crystalline alloys and are characteristic of complex relaxation phenomena [3].
Sign-in/Register to view highlights & summary 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.
