Microstructure and Precipitates in Mg-Zn-Y Alloys

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The present work studied the precipitate microstructures in as-cast Mg-Zn-Y-Zr alloys. The experimental result showed that there is significant number of small precipitates within the grains besides the icosahedral quasicrystals along the grain boundaries. Among these precipitates, a new phase has been identified. The new phase displays square morphologies with the size in the range of 200 nm to 2 μm. According to the energy dispersive spectrometer (EDS), this phase could be a metallic Y-riched compound. The diffraction patterns can be indexed with an f.c.c. structure with the lattice parameter a = 0.52±0.1 nm. The structure does not agree with any precipitate structures that have been reported from the previous studies of Mg-Zn-Y alloys.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

203-206

Citation:

M. Zhang et al., "Microstructure and Precipitates in Mg-Zn-Y Alloys", Materials Science Forum, Vols. 546-549, pp. 203-206, 2007

Online since:

May 2007

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$38.00

[1] I.J. Polmear. Mater. Trans. JIM 1996; 37: 12.

[2] J.B. Clark. Acta Metall. 1968; 16: 141.

[3] A. Luo, M.O. Pekguleryuz. J. Mater. Sci., 1994, 29: 5259.

[4] Z.P. Luo, S.Q. Zhang. J. Mater. Sci. Lett., 1993, 12: 1490.

[5] G.Y. Yuan, H. Kato, K. Amiya, A. Inoue. J. Mater. Res., 2005, 20: 1278.

[6] A. Inoue, M. Matsushita, Y. Kawamura, K. Amiya, K. Hayashi, J. Koike. Mater. Trans., 2002, 43: 580.

[7] L.Y. Wei, G.L. Dunlop, H. Westengen. Metall. Mater. Trans., 1995, 26A: 1705.

[8] D.H. Bae, S.H. Kim, W.T. Kim, D.H. Kim. Mater. Trans., 2001, 42: 2144.

[9] A. Singh, M. Watanabe, A. Kato, A.P. Tsai. Mater. Sci. & Eng. A, 2004, 385: 382.

[10] Z.P. Luo, S.Q. Zhang. J. Mater. Sci. Lett., 2000, 19: 813.

[11] X.Q. Zeng, Y. Zhang, C. Lu, W.J. Ding, Y.X. Wang, Y.P. Zhu. J. Alloys Comp., 2005, 395: 213.

[12] I.J. Kim, D.H. Bae, D.H. Kim. Mater. Sci. & Eng. A, 2003, 359: 313.

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