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Effect of Er doping on glass-forming ability of Co50Cr15Mo14C15B6 alloy

Published online by Cambridge University Press:  01 April 2006

H. Men ,
S.J. Pang  and
T. Zhang
H. Men
Affiliation:
Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, People's Republic of China
S.J. Pang
Affiliation:
Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, People's Republic of China
T. Zhang*
Affiliation:
Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, People's Republic of China
*
a) Address all correspondence to this author. e-mail: zhangtao@buaa.edu.cn
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Abstract

Bulk glass formation of the Co–Cr–Mo–C–B–Er alloy system was investigated in this paper. The Co50Cr15Mo14C15B6 (at.%) alloy could be cast into fully glassy rod with a diameter up to 2 mm. By adding 2 at.% Er to this alloy, the critical diameter for glass formation reached 10 mm. The excellent glass formability of the Er-doped alloy was mainly attributed to its relatively large reduced glass transition temperature of 0.61, near-eutectic composition, and the necessity of redistribution of the Er atoms for precipitation of crystalline Co6Mo6C phase in the undercooled liquid on cooling.

Keywords

Rapid solidificationScanning electron microscopy (SEM)Second phases
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 4 , April 2006 , pp. 958 - 961
Copyright
Copyright © Materials Research Society 2006

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References

REFERENCES

1.Turnbull, D.: Under what conditions can a glass be formed. Contemp. Phys. 10, 473 (1969).CrossRefGoogle Scholar
2.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. Lett. 83, 7993 (1998).Google Scholar
3.Zhang, B., Zhao, D.Q., Pan, M.X., Wang, W.H., Greer, A.L.: Amorphous metallic plastic. Phys. Rev. Lett. 94, 205502 (2005).CrossRefGoogle ScholarPubMed
4.Lu, Z.P., Liu, C.T., Thompson, J.R., Porter, W.D.: Structural amorphous steels. Phys. Rev. Lett. 92, 245503 (2004).CrossRefGoogle ScholarPubMed
5.Ponnambalam, V., Poon, S.J., Shiflet, G.J.: Fe-based bulk metallic glasses with diameter thickness larger than one centimeter. J. Mater. Res. 19, 1320 (2004).CrossRefGoogle Scholar
6.Inoue, A., Shen, B.L., Koshiba, H., Kato, H., Yavari, A.R.: Ultra-high strength above 5000 MPa and soft magnetic properties of Co–Fe–Ta–B bulk glassy alloys. Acta Mater. 52, 1631 (2004).CrossRefGoogle Scholar
7.Kraus, W. and Nolze, G.: Powder cell for powder pattern calculation and profile fitting, version 2.3. Available from: http://www.ccp14.ac.uk. Accessed June 2005.Google Scholar
8.Gebert, A., Eckert, J., and Schultz, L.: Effect of oxygen on phase formation and thermal stability of slowly cooled Zr65Al7.5Cu17.5Ni10 metallic glass. Acta Mater. 46, 5474 (1998).CrossRefGoogle Scholar
9.Lin, X.H., Johnson, W.L.: Formation of Ti–Zr–Cu–Ni bulk metallic glasses. J. Appl. Phys. 78, 6514 (1995).CrossRefGoogle Scholar
10.Wang, D., Li, Y., Sun, B.B., Sui, M.L., Lu, K., Ma, E.: Bulk metallic glass formation in the binary Cu–Zr system. Appl. Phys. Lett. 84, 4029 (2004).CrossRefGoogle Scholar
11.Men, H., Kim, W.T., Kim, D.H.: Glass formation and crystallization behavior in Mg65Cu25Y10−x Gdx (x = 0, 5, 10) alloys. J. Non-Cryst. Solids 337, 29 (2004).CrossRefGoogle Scholar
12.Well, A.F.: Structural Inorganic Chemistry (Oxford University Press, Oxford, UK, 1984), p. 1382.Google Scholar
13.de Boer, F.R., Boom, R., Mattens, W.C.M., Miedema, A.R., Niessen, A.K.: Cohesion in Metals (North-Holland, Amsterdam, The Netherlands, 1989).Google Scholar
14.Widom, M., Mihalkovic, M.: Stability of Fe-based alloys with structure type C6Cr23. J. Mater. Res. 20, 237 (2005).CrossRefGoogle Scholar