Mg-Y-Cu Bulk Metallic Glass Obtained by Mechanical Alloying and Powder Consolidation


Article Preview

Mg55Y15Cu30 metallic glass powders were prepared by the mechanical alloying of pure Mg, Y, and Cu after 10 h of milling. The thermal stability of these Mg55Y15Cu30 amorphous powders was investigated using the differential scanning calorimeter (DSC). Tg ,Tx , and Δ Tx are 442 K, 478 K, and 36 K, respectively. The as-milled Mg55Y15Cu30 powders were then consolidated by vacuum hot pressing into disk compacts with a diameter and thickness of 10 mm and 1 mm, respectively. This yielded bulk Mg55Y15Cu30 metallic glass with nanocrystalline precipitates homogeneously embedded in a highly dense glassy matrix. The pressure applied during consolidation can enhance thermal stability and prolong the existence of amorphous phase within Mg55Y15Cu30 powders.



Materials Science Forum (Volumes 534-536)

Edited by:

Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim




P. Y. Lee et al., "Mg-Y-Cu Bulk Metallic Glass Obtained by Mechanical Alloying and Powder Consolidation", Materials Science Forum, Vols. 534-536, pp. 205-208, 2007

Online since:

January 2007




[1] A. Inoue, K. Ohtera, K. Kita, T. Masumoto, Jpn. J. Appl. Phys. 1988; 27: L2248-L2251.


[2] A. Kato, H. Horikiri, A. Inoue, T. Masumoto, Mater. Sci. Eng. 1994; A179/A180: 707-711.

[3] K. Amiya, A. Inoue, Mater. Trans. JIM 2000; 41: 1460-1462.

[4] W.L. Johnson, Prog. Mater. Sci. 1986; 30: 81-134.

[5] C.K. Lin, S.W. Liu, P.Y. Lee, Metal Mater. Trans. 2001; 32A: 1777-1786.

[6] J. Eckert, Mater. Sci. Forum 1999; 312-314: 3-12.

[7] C. K. Lin, C. C. Hsu,R. R. Jeng,Y. L. Lin , C. H. Yeh and P.Y. Lee: Mater. Sci. Forum 2005; 475-479: 3451-3458.

[8] S. G. Kim, A. Inoue, T. Masumoto, Mater. Trans. JIM 1990; 31: 929.

[9] M. Seidel, J. Eckert, L. Schultz, Mater Sci Forum 1997; 235-238: 29.

[10] J. Z. Jiang, J. S. Olsen, L. Gerward, S. Abdali, J. Eckert, N. Schlorke-de Boer, L. Schultz, J. Truckenbrodt, P. X. Shi, J Appl Phys 2000; 87: 2664. 20 30 40 50 60 70 80 Isothermal 30min (Bulk) as-milled Isothermal 30min (Powder) Relative Intensity (arb. units) 2θ Mg2Cu Mg Mg24Y5 400 500 600 700 as-milled Isothermal 30min at 453K (Bulk) Isothermal 30min at 453K (Powder) Relative Intensity (arb. units) Temperature ( K ) Fig. 4 XRD and DSC data of as-milled, heat-treated, and bulk Mg55Y15Cu30 specimens. (a)XRD patterns and (b) DSC scans.


Fetching data from Crossref.
This may take some time to load.