19 April 2017 Measurement of mechanical properties of metallic glass at elevated temperature using sonic resonance method
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Bulk metallic glasses are fully amorphous multi-component alloys with homogeneous and isotropic structure down to the atomic scale. Some attractive attributes of bulk metallic glasses include high strength and hardness as well as excellent corrosion and wear resistance. However, there are few reports and limited understanding of their mechanical properties at elevated temperatures. We used a nondestructive sonic resonance method to measure the Young’s modulus and Shear modulus of a bulk metallic glass, Zr41.2Ti13.8Cu12.5Ni10Be22.5, at elevated temperatures. The measurement 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 OMICRON Bode-100 Vector Network Analyzer was used to sweep the frequency and its output was connected to the speaker which vibrated the material in its flexural mode and torsional modes. A Polytec OFV-505 laser vibrometer sensor was used to capture the vibration of the material at various frequencies. The flexural and torsional mode frequency shift due to the temperature variation was used to determine the Young’s modulus and Shear modulus. The temperature range of measurement was from 50°C to 350°C. The Young’s modulus was found to reduce from 100GPa to 94GPa for the 300°C temperature span. Similarly, the Shear modulus decreased from 38.5GPa at 50°C to 36GPa at 350°C.
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Suresh Kaluvan, Suresh Kaluvan, Haifeng Zhang, Haifeng Zhang, Sanghita Mridha, Sanghita Mridha, Sundeep Mukherjee, Sundeep Mukherjee, } "Measurement of mechanical properties of metallic glass at elevated temperature using sonic resonance method", Proc. SPIE 10169, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017, 1016926 (19 April 2017); doi: 10.1117/12.2260367; https://doi.org/10.1117/12.2260367

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