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Structure, Annealing Characteristics and Mechanical Properties of Mg60Cu30-yY10Siy Bulk Amorphous Alloys

Published online by Cambridge University Press:  11 February 2011

U. Wolff ,
B. Yang ,
N. Pryds  and
J.A. Wert
U. Wolff
Affiliation:
Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark
B. Yang
Affiliation:
State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
N. Pryds
Affiliation:
Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark
J.A. Wert
Affiliation:
Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark
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Abstract

The effect of different Si contents on the glass forming ability (GFA) and the amorphous-to-crystalline transformation has been investigated for the Mg-Cu-Y-Si system. Four Mg60Cu30-yY10Siy (y = 1–5 at.%) alloys were prepared using a relatively simple technique of rapid cooling of the melt in a copper mould. Crystallization was induced by heat treatment of the alloys and the samples were then characterized concerning their microstructure and thermal stability by X-ray diffraction (XRD), optical (OM) and scanning electron microscopy (SEM) and differential scanning calorimetry (DSC) at a constant heating rate. Partial substitution of Cu by Si leads to a transition of the as-cast structure at a constant cooling rate from amorphous to crystalline with increasing Si content. Furthermore, the glass transition temperature (Tg) of the Mg-Cu-Y-Si alloy is lower compared to the Mg-Cu-Y system. The mechanical properties of the bulk Mg-Cu-Y-Si alloys have been investigated and found to vary with the Si content.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 754: Symposium CC – Supercooled Liquids, Glass Transition and Bulk Metallic Glasses , 2002 , CC11.14
Copyright
Copyright © Materials Research Society 2003

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References

REFERENCES

1. Kang, H.G., Park, E.S., Kim, W.T., Kim, D.H. and Cho, H.K., Mater. Trans. JIM 41, 846 (2000).Google Scholar
2. Men, H., Hu, Z.Q. and Xu, J., Scripta Materialia, 46, 699 (2003).Google Scholar
3. Ohnuma, M., Pryds, N., Linderoth, S., Eldrup, M., Pedersen, A.S. and Pedersen, J.S., Scripta Materialia, 41, 889 (1999).Google Scholar
4. Linderoth, S., Pryds, N., Ohnuma, M., Pedersen, A.S., Eldrup, M., Nishiyama, N. and Inoue, A., Mater. Sci. Eng., A 304–306, 656 (2001).Google Scholar
5. Pryds, N., Eldrup, M., Ohnuma, M., Pedersen, A.S., Hattel, J. and Linderoth, S., Mater. Trans. JIM 41, 1435 (2000).Google Scholar
6. Liu, W. and Johnson, W.L., J. Mater. Res., 11, 2388 (1996).Google Scholar
7. Liu, W., Johnson, W.L., Schneider, S., Geyer, U. and Thiyagarajan, P., Phys. Rev. B59, 11755 (1999).Google Scholar
8. Inoue, A., Zhang, T. and Masumoto, T., J. Non-Cryst Solids, 156–158, 473 (1993).Google Scholar
9. Greer, A. L., Nature, 366, 303 (1993).Google Scholar
10. Smithells, C.J. and Brandes, E.A., “Metal Reference Book”, 5th ed., (Butterworths, London, 1976), p. 100.Google Scholar
11. Lin, X.H. and Johnson, W.L., J. Appl. Phys. 78, 6541 (1995).Google Scholar
12. Wolff, U., Pryds, N. and Wert, J.A., “Deformation Characteristics of Mg60Cu30Y10 Alloy at Temperatures Near Tg”, accepted for publication in Materials Science and Engineering, 2003 Google Scholar