Abstract
Elastic properties of bulk metallic glass (BMG) Pd39Ni10Cu10P21 have been studied basing on sonic velocity data analysis. Different states of the Pd39Ni 10Cu 1 oP21 system (glassy state, super-cooled liquid (SCL) and re-crystallized states) were obtained by annealing of the samples at different temperature near the glass transition and onset crystallization temperature. Microacoustical technique has been applied to measure local values of longitudinal and transverse elastic wave velocities and their distribution over a specimen body. Finally sonic velocities CL and CT, density p, bulk K and shear G elastic moduli were measured for different states of Pd39Ni 10Cu 10P21 BMG. It has been shown decreasing values of p, C<sub>L</sub> and K as temperature. For the re-crystallized state ultrasonic measurements were performed by low-frequency flat transducer because of high ultrasonic attenuation in this case. Acoustic images (C-scans) evidence occurrence of rough-grain microstructure at this state. It is assumed the rough granular structure with particles size 70-80m is characteristic for re-crystallized state of BMG.
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© 2004 Springer Science+Business Media Dordrecht
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Levin, V.M., Petronyuk, S.J., Wang, L., Hu, J., Zhang, Q. (2004). Application of Microacoustical Technique to Study Elastic Properties and Microstructure of New Generation of Bulk Metallic Glasses. In: Arnold, W., Hirsekorn, S. (eds) Acoustical Imaging. Acoustical Imaging, vol 27. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-2402-3_30
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DOI: https://doi.org/10.1007/978-1-4020-2402-3_30
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-6652-7
Online ISBN: 978-1-4020-2402-3
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