Influence of Nb on the Interface Structure of Tungsten Fiber Reinforced Zr-Based Bulk Metallic Glass Composites


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Zr-based metallic-glass matrix composites, which are reinforced by continuous tungsten fibers, were prepared by melt infiltration casting. The interface structure was analyzed by using X-Ray diffraction, SEM and EPMA. The results illustrate that for the Zr55Al10Ni5Cu30 matrix composite, in addition to the interface diffusion, an interface eutectoid reaction between W fiber and Zr in the liquid state takes place and forms W5Zr3 phase at the interface during casting, the interface is included in Class Ⅲ system; but for (Zr55Al10Ni5Cu30)0.98Nb2 and Zr57Al10Ni12.6Cu15.4Nb5 matrix composite, the addition of Nb restrains the interface eutectoid reaction effectively, which may be attributed to reducing diffusion coefficient of Zr through the interface, and there is only a thinner diffusion layer at the interfaces, the type of interface is changed to the Class Ⅱ system



Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie




M. L. Wang et al., "Influence of Nb on the Interface Structure of Tungsten Fiber Reinforced Zr-Based Bulk Metallic Glass Composites", Materials Science Forum, Vols. 475-479, pp. 3389-3392, 2005

Online since:

January 2005




[1] Bian Zan, He Guo: Rear Metal Materials and Engineering Vol. 30, (2001), P. 190.

[2] T.C. Hufngel, P. EI-Deiry, R.P. Vinci: Scripta Mater. 43(2000), P. 1071.

[3] T.C. Hufngel, Cang Fan, R.T. ott: Intermetallics 10(2002), P. 1163.

[4] H. Tan, Y. Zhang, Y. Li: Intermetallic 10(2002): 1203.

[5] R.D. Conner, W.L. Johnson: J. Mater. Res. Vol. 13(1998), P. 2796.

[6] H. Choi-Yim, R.D. Conner, F. Szuecs: Acta Materialia 50 (2002), P. 2737.

[7] K.Q. Qiu, A.M. Wang, H.F. Zhang: Intermetallic 10(2002), P. 1283.

[8] R.B. Dandliker, R.D. Conner and W.L. Johnson; J. Mater. Res. 13(1998), P. 2898.

[9] Qiu Keqiang,Wang Aimin,Zhang Haifeng: Chinese Journal of Materials Research Vol 16(2002), P. 389.

[10] T.B. Massalski: Binary Alloy Phase Diagrams (ASM International, USA1990).

[11] H. -G. Jeong, K. Hiraga: Acta Mater. Vol. 17(1998), P. 6009.

[12] T. Ishida: Journal of Materials Science 21(1986), P. 1171.

[13] Yu Yongning: Principles of Metallography (Metallurgical Industry Press, Beijing 2000).

[14] G. Metcalfe: Composite Materials: Interface in Metal Matrix Composites (Academic Press, London 1974). 2 1 0 -1 -2 -3 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 a, Zr55Al10Ni5Cu30 b, (Zr55Al10Ni5Cu30)0. 98Nb2 c, Zr57Al10Ni12. 6Cu15. 4Nb5 W fiber matrix c b a Relative Concentration of Zr Dinstance from the Center of Interface(um) Fig. 4 Relative concentration of Zr across the W fiber/matrix interface Table 2 The diffusion coefficient of Zr in W fiber.