摘要Ti-based bulk metallic glasses (Ti40Zr25Cu9Ni8Be18)100-xNbx with x=0 to 5at.% are prepared by copper-mold casting. The glass formation ability is almost unchanged by addition of Nb. The compression plasticity is, however, apparently changed, from 3% at x=0 to 13% at x=3, about 330% increases at the strain rate of 1×10-4s-1. The increment of the plasticity can be attributed to the segregation of Nb in the area of shear bands during the compression processing. An effective way to increase the plasticity of Ti-based bulk metallic glasses is thus proposed.
Abstract：Ti-based bulk metallic glasses (Ti40Zr25Cu9Ni8Be18)100-xNbx with x=0 to 5at.% are prepared by copper-mold casting. The glass formation ability is almost unchanged by addition of Nb. The compression plasticity is, however, apparently changed, from 3% at x=0 to 13% at x=3, about 330% increases at the strain rate of 1×10-4s-1. The increment of the plasticity can be attributed to the segregation of Nb in the area of shear bands during the compression processing. An effective way to increase the plasticity of Ti-based bulk metallic glasses is thus proposed.
[1] Peker A and Johnson W L 1993 Appl. Phys. Lett. 63 2342 [2] Inoue A, Kato A, Zhang T, Kim S G and Masumoto T 1991 Mater. Trans. JIM 32 609 [3] Inoue A, Ohatera K, Kita K and Masumoto T 1988 J. Appl. Phys. 27 248 [4] Wang X M, Yoshii I, Inoue A, Kim Y H and Kim I B 1999 Mater. Trans. JIM 40 1130 [5] Tanner L E and Ray R 1977 Scripta Metal. 11 783 [6] Polk D E, Calka A and Giessen B C 1978 Acta Metall. 26 1097 [7] Zhang T, Inoue A and Masumoto T 1994 Mater. Sci. Eng. A 181 1423 [8] Inoue A, Nishiyama N, Amiyam K, Zhang T and Masumoto T 1994 Mater. Lett. 19 131 [9] Zhang T and Inoue A 2001 Mater. Sci. Eng. A 304--306 771 [10] Kim Y C, Kim W T and Kim D H 2002 Mater. Trans. JIM 43 1243 [11] Kim Y C, Kim W T and Kim D H 2004 Mater. Sci. Eng. A 375--377 127 [12] Liu C T, Heatherly L, Eaton D S, Carmichael C A, Schneibel J H and Chen C H et al 1998 Metall. Mater. Trans. A 29 1811 [13] Bian Z, He G and Chen G L 2002 Scripta Mater. 46 407 [14] He G, Bian Z, Chen G L, Lu J, Chen D J and Tu G C 2001 J. Mater. Sci. Technol. 17 389 [15] Yao K F, Ruan F, Yang Y Q and ChEn N 2006 Appl. Phys. Lett. 88 122106 [16] Yao K F and Zhang C Q 2007 Appl. Phys. Lett. 90 061901 [17] Yim H Choi, Busch R, K\"{oster U and Johnson W L 1999 Acta Mater. 47 2455 [18] Eckert J, K\"{ubler A and Schultz L 1999 J. Appl. Phys. 85 7112 [19] Fan C and Inoue A 1999 Mater. Trans. JIM 40 42 [20] Dandliker R B, Conner R D and Johnson W L 1998 J. Mater. Res. 13 2896 [21] Kim C P, Busch R, Masuhr A, Yim H Choi and Johnson W L 2001 Appl. Phys. Lett. 79 1456 [22] Conner R D, Dandliker R B and Johnson W L 1998 Acta Mater. 46 6089 [23] Yim H Choi and Johnson W L 1997 Appl. Phys. Lett. 71 3808 [24] Hays C C, Kim C P and Johnson W L 2000 Phys. Rev. Lett. 84 2901 [25] Szuecs F, Kim C P and Johnson W L 2001 Acta Mater. 49 1507 [26] K\"{uhn U, Eckert J, Mattern N and Schultz L 2002 Appl. Phys. Lett. 80 2478 [27] Zhang Y, Wang W H and Greer A L 2006 Nature 5 857 [28] Liu Y H, Wang G, Wang R G, Zhao D Q, Pan M X and Wang W H 2007 Science 315 1385 [29] Conner R D, Yim H Choi and Johnson W L 1999 J. Mater. Res. 14 3292 [30] Jiang W H and Atzmon M 2003 Acta Mater. 51 4095 [31] Jiang W H and Atzmon M 2006 Scripta Mater. 54 333 [32] Kim J J, Choi Y, Suresh S and Argon A S 2002 Science 295 654 [33] Jiang W H, Pinkerton F E and Atzmon M 2003 J. Appl. Phys. 93 9287
2008, Vol. 25 
