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Journal of Materials Engineering and Performance

Published in:

01-12-2015

Studies on Dynamic Elastic and Internal Friction Properties of Cu-Cr-Zr-Ti Alloy Between 25 and 650 °C

Authors: K. Saravanan, V. M. J. Sharma, A. K. Asraff, P. Ramesh Narayanan, S. C. Sharma, Koshy M. George

Published in: Journal of Materials Engineering and Performance | Issue 12/2015

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Abstract

In the present study, dynamic elastic constants namely Young’s modulus, shear modulus, Poisson’s ratio, and internal friction properties for polycrystalline Cu-0.68Cr-0.04Zr-0.03Ti-0.015Fe (wt.%) alloy have been evaluated from 25 to 650 °C temperature in argon environment. These properties were determined using resonance-based high-temperature impulse excitation technique. The temperature-dependent elastic constants are very vital for the thermo-structural analysis to predict the performance of the component/structure. The test results revealed that, the alloy exhibits linear reduction in Young’s modulus and shear modulus with increasing temperature. On the other hand, the calculated Poisson’s ratio showed minor increase with temperature. It was shown that, the variation in the internal friction is attributed to in situ aging in the temperature range studied. Overaging beyond 500 °C has led to drastic increase of internal friction. This has been supported by hardness measurement, tensile test, differential scanning calorimetry test, and transmission electron microscopy examination.

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Title: Studies on Dynamic Elastic and Internal Friction Properties of Cu-Cr-Zr-Ti Alloy Between 25 and 650 °C
Authors: K. Saravanan
V. M. J. Sharma
A. K. Asraff
P. Ramesh Narayanan
S. C. Sharma
Koshy M. George
Publication date: 01-12-2015
Publisher: Springer US
Published in: Journal of Materials Engineering and Performance / Issue 12/2015
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-015-1778-5

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