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Plasticity improvement of Zr55Al10Ni5Cu30 bulk metallic glass by remelting master alloy ingots

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Abstract

The effect of repeated melting of master alloy ingots on the bending properties of Zr55Al10Ni5Cu30 bulk metallic glass (BMG) was investigated. The bending plasticity of Zr55Al10Ni5Cu30 BMG was found to be improved with the increased remelting times. When remelted 10 times, the BMG sample cast from the master alloy ingot undergoes bending, but it does not fracture even though the bending angle increases to 100°; the maximum bending stress and elastic strain remain almost constant. The bending plasticity improvement may be attributed to the fact that the increased remelting times result in more free volume and more disorder and homogeneous microstructure in the BMG, which favors the initial nucleation of profuse shear bands and reduces the probability of catastrophic fracture.

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Authors and Affiliations

  1. State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People’s Republic of China

    Yong Hu, Jinfu Li, Lin Tao & Yaohe Zhou

  2. School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, 030024, People’s Republic of China

    Yong Hu

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  1. Yong Hu
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  2. Jinfu Li
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Correspondence to Jinfu Li.

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Hu, Y., Li, J., Tao, L. et al. Plasticity improvement of Zr55Al10Ni5Cu30 bulk metallic glass by remelting master alloy ingots. Journal of Materials Research 24, 3590–3595 (2009). https://doi.org/10.1557/jmr.2009.0430

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