Title: Determination of temperature-dependent Young's modulus of bulk metallic glass

Authors: Suresh Kaluvan; Haifeng Zhang; Sanghita Mridha; Sundeep Mukherjee

Addresses: Department of Mechanical and Energy Engineering, University of North Texas, Denton 76209, TX, USA ' Department of Mechanical and Energy Engineering, University of North Texas, Denton 76209, TX, USA ' Department of Materials Science and Engineering, University of North Texas, Denton 76209, TX, USA ' Department of Materials Science and Engineering, University of North Texas, Denton 76209, TX, USA

Abstract: Bulk metallic glasses (BMGs) are fully amorphous multi-component alloys with homogeneous and isotropic structure down to the atomic scale. Some attractive attributes of BMGs include high strength and hardness as well as excellent corrosion and wear resistance. The research goal of this paper is to determine the mechanical properties at elevated temperatures. To accomplish this goal, we have used two methods in this paper to determine the Young's modulus of a BMGs, Zr41.2Ti13.8Cu12.5Ni10Be22.5 at elevated temperatures: sonic resonance method and nanoindentation. In the sonic resonance method, the system was designed using a laser displacement sensor to detect the sonic vibration produced by a speaker on the specimen in high-temperature furnace. The Young'ss modulus was found to reduce from 100 GPa (350°C) to 94 GPa (50°C). In the nanoindentation method, modulus was determined from the unloading curve and found to be in the same range as measurements from sonic resonance technique.

Keywords: Young's modulus; elevated temperature; sonic resonance; metallic glass.

DOI: 10.1504/IJMMP.2019.101802

International Journal of Microstructure and Materials Properties, 2019 Vol.14 No.4, pp.374 - 383

Received: 25 Apr 2018
Accepted: 18 Jan 2019
Published online: 27 Aug 2019 *

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