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Glass-forming ability(GFA) and mechanical properties of(Zr_(0.58)Nb_(0.03)Cu_(0.16)Ni_(0.13)Al_(0.10))_(100-x)Lu_x(x= 0-3 at%) alloys have been investigated.The GFA of Zr_(58)Nb_3Cu_(16)Ni_(13)Al_(10) alloy is dramatically enhanced by adding Lu.The(Zr_(0.58)Nb_(0.03)Cu_(0.16)Ni_(0.13)Al_(0.10))_(98)Lu_2 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 Zr_(58)Nb_3Cu_(16)Ni_(13)Al_(10) alloy is 7 mm.The critical diameters of(Zr_(0.58)Nb_(0.03)Cu_(0.16)Ni_(0.13)Al_(0.10))_(100-x)Lu_x(x =1 at%and 3 at%) alloys are 15 mm and 12 mm,respectively.The Lu addition to Zr_(58)Nb_3Cu_(16)Ni_(13)Al_(10) alloy induces the change of initial crystallization phases from face-centred-cubic Zr_2Ni and tetragonal Zr_2Ni phases for the Lu-free Zr_(58)Nb_3Cu_(16)Ni_(13)Al_(10) 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(Zr_(0.58)Nb_(0.03)Cu_(0.16)Ni_(0.13)Al_(0.10))_(98)Lu_2 alloy are1 610 MPa and 1.5%,respectively.
Glass-forming ability (GFA) and mechanical properties of (Zr_ (0.58) Nb_ (0.03) Cu_ (0.16) Ni_ (0.13) Al_ (0.10)) _ (100-x) Lu_x (x = 0-3 at%) alloys (Zr_ (0.58) Nb_ (0.03) Cu_ (0.16) Ni_ (0.13) Al_ (10) Nb_3Cu_ (16) Ni_ (13) Al_ (10) (0.10)) _ (98) Lu_2 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-mold casting method, while that of The critical diameters of (Zr_ (0.58) Nb_ (0.03) Cu_ (0.16) Ni_ (0.13) Al_ (0.10) ) _ (100-x) Lu_x (x = 1 at% and 3 at%) alloys are 15 mm and 12 mm respectively.The addition of Zr_ (58) Nb_3Cu_ (16) Ni_ (13) Al_ induces the change of initial crystallization phases from face-centred-cubic Zr_2Ni and tetragonal Zr_2Ni phases for the Lu-free Zr_ (58) Nb_3Cu_ (16) Ni_ (13) Al_ (10) alloys to an icosahedral quasi-crystalline phase for the Lu -doped alloys, which may be the orig in for the enhanced GFA of the Lu-doped alloys. The compressive fracture strength and plastic strain of the bulk glassy (Zr_ (0.58) Nb_ (0.03) Cu_ (0.16) Ni_ (0.13) Al_ (0.10) alloy are1 610 MPa and 1.5%, respectively.