Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-19T05:06:21.187Z Has data issue: false hasContentIssue false
  • English
  • Français

Bulk Mg-Cu-Y-Al Alloys in the Amorphous, Supercooled Liquid and Crystalline States

Published online by Cambridge University Press:  17 March 2011

S. Linderoth ,
N. Pryds ,
M. Eldrup ,
A.S. Pedersen ,
M. Ohnuma ,
T.-J. Zhou ,
L. Gerward ,
J.Z. Jiang  and
C. Lathe
S. Linderoth
Affiliation:
Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark
N. Pryds
Affiliation:
Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark
M. Eldrup
Affiliation:
Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark
A.S. Pedersen
Affiliation:
Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark
M. Ohnuma
Affiliation:
National Research Institute for Metals, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
T.-J. Zhou
Affiliation:
Department of Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark
L. Gerward
Affiliation:
Department of Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark
J.Z. Jiang
Affiliation:
Department of Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark
C. Lathe
Affiliation:
HASYLAB am DESY, D-22603 Hamburg, Germany
Get access

Abstract

Bulk Mg-Cu-Y-Al alloys, prepared by casting into a wedge-shaped copper mold, have been studied in the as-prepared, the supercooled liquid, and the crystalline states. In the as-prepared state x-ray diffraction of sub-millimeter sized regions were performed using a focused x-ray beam. The phase composition of the cross section as well as of the surface of the wedge-shaped specimen was investigated as a function of position. The cooling history of the alloy was experimentally determined and compared to results of a control-volume finite-difference modelling study. The experimentally determined and the calculated cooling rates were correlated with the observed amorphous/crystalline structure. The transition from an amorphous to a crystalline state was followed by x-ray diffraction studies as a function of time at specific temperatures in the region between the glass transition and the crystallization temperature. Based on these results a temperature-time-phase diagram was constructed. The dependence of external pressure on the crystallisation temperature was investigated by in situ high-temperature and high- pressure x-ray powder diffraction by using synchrotron radiation. The investigations form the basis for a selection of the optimum temperature in the supercooled liquid region for performing deformation/shaping of the Mg-based alloys.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 644: Symposium L – Supercooled Liquid, Bulk Glassy and Nanocrystalline State of Alloys , 2000 , L4.1
Copyright
Copyright © Materials Research Society 2001

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Sommer, F., Bucher, G., and Predel, B., J. Phys. Coll. C8, 563 (1980).Google Scholar
2. Kim, S.G., Inoue, A., and Masumoto, T., Mater. Trans. JIM 31, 929 (1990).Google Scholar
3. Inoue, A., Kato, A., Zhang, T., Kim, S.G., and Masumoto, T., Mater. Trans. JIM 32, 609 (1991).Google Scholar
4. Inoue, A., Mater. Trans. JIM 36, 866 (1995).Google Scholar
5. Saotome, Y., Zhang, T., and Inoue, A., Mat. Res. Soc. Symp. Proc. 554, 385 (1999).Google Scholar
6. Liu, W. and Johnson, W.L., J. Mater. Res. 11, 2388 (1996).Google Scholar
7. Ohnuma, M., Linderoth, S., Pryds, N., Eldrup, M., and Pedersen, A.S., Mat. Res. Soc. Symp. Proc. 554, 119 (1999).Google Scholar
8. Murty, B.S. and Hono, K., Mater. Trans. JIM 41, 323 (2000).Google Scholar
9. Kang, H.G., Park, E.S., Kim, W.T., Kim, D.H., and Cho, H.K., Mater. Trans. JIM 41, 846 (2000).Google Scholar
10. Linderoth, S., Pryds, N.H., Ohnuma, M., Pedersen, A.S., Eldrup, M., Nishiyama, N., and Inoue, A., Mater. Sci. Eng. (in press).Google Scholar
11. Ohnuma, M., Pryds, N., Linderoth, S., Eldrup, M., Pedersen, A.S., and Pedersen, J.S., Scripta Metall. 41, 889 (1999).Google Scholar
12. Pryds, N.H., Eldrup, M., Ohnuma, M., Pedersen, A.S., Hattel, J., and Linderoth, S., Mater. Trans. JIM 41 (2000).Google Scholar
13. Eldrup, M., Pedersen, A.S., Ohnuma, M., Pryds, N., and Linderoth, S., J. Metast. & Nanocryst. Alloys 8, 123 (2000).Google Scholar
14. Juarez-Islas, J. A., Warrington, D.H., and Jones, H., J. Mater. Sci. 24, 2076 (1989).Google Scholar
15. Inoue, A. and Masumoto, T., Mater. Sci. Eng. A173, 1 (1993).Google Scholar
16. Olsen, J.S., Gerward, L., and Jiang, J.Z., J. Phys. Chem. Solids 60, 229 (1999).Google Scholar
17. Decker, D.L., J. Appl. Phys. 42, 3239 (1971).Google Scholar
18. Busch, R., Liu, W., and Johnson, W.L., J. Appl. Phys. 83, 4134 (1998).Google Scholar
19. Izumi, F., The Rietveld Method, ed. by Young, R. A., (Oxford University Press, Oxford, 1993), Chap.13.Google Scholar
20. Jiang, J.Z., Zhou, T.J., Rasmussen, H.K., Kuhn, U., Eckert, J., and Lathe, C., Appl. Phys. Lett. 77, 3553 (2000).Google Scholar
21. Jiang, J.Z., Olsen, J.S., Gerward, L., Abdali, S., Eckert, J., Boer, N. Schlorke-de, Schultz, L., Truckenbrodt, J., and Shi, P.X., J. Appl. Phys. 87, 2664 (2000).Google Scholar
22. Jiang, J.Z., Zhuang, Y.X., Rasmussen, H., Lathe, C., and Inoue, A., Appl. Phys. Lett. (to be published).Google Scholar
23. Inoue, A., Acta Mater. 48, 279 (2000).Google Scholar
24. Material Science of Amorphous Alloys, ed. by Masumoto, T., (Ohmu, Tokyo, 1983), p. 39.Google Scholar
25. Zhuang, Y.X., Jiang, J.Z., Zhou, T.J., Rasmussen, H., Gerward, L., Mezouar, M., Crichton, W., and Inoue, A., Appl. Phys. Lett. 77, 4133 (2000).Google Scholar