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Minor additions of Sn in a bulk glass-forming Fe-based system

  • Z.P. Lu (a1), C.T. Liu (a2) and X.Z. Wang (a2)

Abstract

Minor additions of Sn in the bulk glass-forming Fe61−xSnxY2Zr8Co5Cr2Mo7B15 (x = 0% to 2%) system were studied in detail. It was found that combinations of Y and Sn can scavenge oxygen out of the undercooled liquids to form innocuous oxides, thus stabilizing the liquids. Besides this beneficial scavenging effect, Sn additions in the present Fe-based alloys also showed complex alloying effects on glass formation, which can be divided into three stages. At stage I (x ≤ 0.5%), the microalloyed compositions associate with the same eutectic as that of the base alloy. The glass-forming ability (GFA) of the resulting alloys is determined primarily by their liquidus temperature and similar to that of the base alloy. At stage II (0.85% ≤ x ≤ 1.15%), glass-matrix composite structures start to form because the alloy compositions are adjusted into a new “deeper” eutectic system. At stage III (x > 1.15%), however, alloy compositions shift to another new eutectic system, and the GFA is dramatically decreased due to the strong formation of primary phase α–Fe. Homogeneous glass-matrix composites with a diameter of 7 mm in the alloy containing 1.0–1.15% Sn were successfully produced.

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a) Address all correspondence to this author. e-mail: luzp@ornl.gov

References

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1.Liu, C.T., Lu, Z.P.: Effect of minor alloying additions on glass formation in bulk metallic glasses. Intermetallics 13, 415 (2005).
2.Lu, Z.P., Liu, C.T.: Role of minor alloying additions in formation of bulk metallic glasses: A review. J. Mater. Sci. 39, 3965 (2004).
3.Wang, W.H., Bian, Z., Wen, P., Zhang, Y., Pan, M.X., Zhao, D.Q.: Role of addition in formation and properties of Zr-based bulk metallic glasses. Intermetallics 10, 1249 (2002).
4.Choi-Yim, H., Busch, R., Johnson, W.L.: The effect of silicon on the glass forming ability of the Cu47Ti34Zr11Ni8 bulk metallic glass forming alloy during processing of composites. J. Appl. Phys. 83, 7993 (1998).
5.Liu, C.T., Chisholm, M.F., Miller, M.K.: Oxygen impurity and microalloying effect in a Zr-based bulk metallic glass alloy. Intermetallics 10, 1105 (2002).
6.Kundig, A.A., Lepori, D., Perry, A.J., Rossmann, S., Blatter, A., Dommann, A., Uggowitzer, P.J.: Influence of low oxygen contents and alloy refinement on the glass forming ability of Zr52.5Cu17.9Ni14.6Al10Ti5. Mater. Trans. 43, 3206 (2002).
7.Lu, Z.P., Liu, C.T., Porter, W.D.: Role of yttrium in glass formation of Fe-based bulk metallic glasses. Appl. Phys. Lett. 83, 2581 (2003).
8.Lu, Z.P., Liu, C.T.: Bulk glass formation in an Fe-based Fe–Y–Zr–M (M = Cr, Co, Al) –Mo–B system. J. Mater. Res. 19, 921 (2004).
9.Choi-Yim, H., Xu, D., Johnson, W.L.: Ni-based bulk metallic glass formation in the Ni–Nb–Sn and Ni–Nb–Sn–X (X = B,Fe,Cu) alloy systems. Appl. Phys. Lett. 82, 1030 (2003).
10.Zhang, Q.S., Zhang, H.F., Deng, Y.F., Ding, B.Z., Hu, Z.Q.: Bulk metallic glass formation of Cu–Zr–Ti–Sn alloys. Scripta Mater. 49, 273 (2003).
11.Park, E.S., Lim, H.K., Kim, W.T., Kim, D.H.: The effect of Sn addition on the glass-forming ability of Cu–Ti–Zr–Ni–Si metallic glass alloys. J. Non-Cryst. Solids 15, 298 (2002).
12.Yi, S., Park, T.G., Kim, D.H.: Ni-based bulk amorphous alloys in the Ni–Ti–Zr– (Si,Sn) system. J. Mater. Res. 15, 2425 (2000).
13.Zhang, T., Inoue, A.: Thermal and mechanical properties of Ti–Ni–Cu–Sn amorphous alloys with a wide supercooled liquid region before crystallization. Mater. Trans., JIM 39, 1001 (1998).
14.Chen, L.C., Spaepen, F.: Calorimetric evidence for the microquasicrystalline structure of amorphous Al-Transition metal-alloys. Nature 336, 366 (1988).
15.Lu, Z.P., Liu, C.T.: Glass formation criterion for various glass-forming systems. Phys. Rev. Lett. 91, 115505 (2003).
16.Ma, D., Tan, H., Wang, D., Li, Y., Ma, E.: Strategy for pinpointing the best glass-forming alloys. Appl. Phys. Lett. 86, 191906 (2005).
17.Lu, Z.P., Ma, D., Liu, C.T., Chang, Y.A.: Competitive formation of glass and glass-matrix composites. Intermetallics (2007, in press).

Keywords

Minor additions of Sn in a bulk glass-forming Fe-based system

  • Z.P. Lu (a1), C.T. Liu (a2) and X.Z. Wang (a2)

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