Abstract
Glass-forming ability (GFA) and mechanical properties of (Zr0.58Nb0.03Cu0.16Ni0.13Al0.10)100-x Lu x (x = 0-3 at%) alloys have been investigated. The GFA of Zr58Nb3Cu16Ni13Al10 alloy is dramatically enhanced by adding Lu. The (Zr0.58Nb0.03Cu0.16Ni0.13Al0.10)98Lu2 alloy possesses the highest GFA in the studied Zr-Nb-Cu-Ni-Al-Lu alloys, with its critical diameter for glass formation reaching 20 mm by copper-mould casting method, while that of the Lu-free Zr58Nb3Cu16Ni13Al10 alloy is 7 mm. The critical diameters of (Zr0.58Nb0.03Cu0.16Ni0.13Al0.10)100-xLux (x = 1 at% and 3 at%) alloys are 15 mm and 12 mm, respectively. The Lu addition to Zr58Nb3Cu16Ni13Al10 alloy induces the change of initial crystallization phases from face-centred-cubic Zr2Ni and tetragonal Zr2Ni phases for the Lu-free Zr58Nb3Cu16Ni13Al10 alloy to an icosahedral quasi-crystalline phase for the Lu-doped alloys, which may be the origin for the enhanced GFA of the Lu-doped alloys. The compressive fracture strength and plastic strain of the bulk glassy (Zr0.58Nb0.03Cu0.16Ni0.13Al0.10)98Lu2 alloy are 1 610 MPa and 1.5%, respectively.
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Funded by the National Natural Science Foundation of China (Nos. 51101133, 51101134), the Encouraging Foundation for Outstanding Youth Scientists of Shandong Province, China (No. BS2012CL036) and the Natural Science Foundation of Shandong Province, China (No. ZR2011EL025)
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Zhao, X., Liu, W., Liu, L. et al. Formation and mechanical properties of Zr-Nb-Cu-Ni-Al-Lu bulk glassy alloys with superior glass-forming ability. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 31, 186–190 (2016). https://doi.org/10.1007/s11595-016-1350-7
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DOI: https://doi.org/10.1007/s11595-016-1350-7