Hostname: page-component-77c78cf97d-4gwwn Total loading time: 0 Render date: 2026-04-27T13:15:19.343Z Has data issue: false hasContentIssue false
  • English
  • Français

Structural characterization and mechanical properties of nanocrystal-containing Cu–Ti-based bulk metallic glass-forming alloys

Published online by Cambridge University Press:  03 March 2011

Y.F. Sun ,
F.S. Li ,
S.K. Guan ,
M.Q. Tang  and
C.H. Shek
Y.F. Sun*
Affiliation:
Research Center for Materials, Department of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, People’s Republic of China
F.S. Li
Affiliation:
Research Center for Materials, Department of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, People’s Republic of China
S.K. Guan
Affiliation:
Research Center for Materials, Department of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, People’s Republic of China
M.Q. Tang
Affiliation:
Research Center for Materials, Department of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, People’s Republic of China
C.H. Shek
Affiliation:
Department of Physics and Materials Science, City University of Hong Kong, Kowloon Tong, Hong Kong, People’s Republic of China
*
a) Address all correspondence to this author. e-mail: yfsun@zzu.edu.cn
Get access

Abstract

Cylindrical Cu42.5Ti41.5Ni7.5Zr2.5Hf5Si1 bulk metallic glass with a diameter of 2 mm was fabricated by copper-mold casting. X-ray diffraction and differential scanning calorimetry analysis of the material showed that the alloy has a homogenous amorphous structure and high glass-forming ability. However, detailed observation by transmission electron microscopy revealed that a kind of nanocrystal with size of about 20 nm is sparsely distributed in the glass matrix. Nanobeam electron diffraction experiments indicated that the nanocrystal has a face-centered cubic crystalline structure. Room-temperature compression tests revealed that the alloy has a high fracture strength of 2250 MPa and obvious plastic strain of about 5.3%. Nanoindentation tests revealed that the as-cast alloy exhibits obviously serrated flow over a wide range of loading rate from 0.5 to 10 mN/min.

Keywords

AlloyAmorphousMicrostructure

Information

Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 2 , September 2006 , pp. 352 - 357
Copyright
Copyright © Materials Research Society 2007

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.)

Article purchase

Temporarily unavailable

References

REFERENCES

1Inoue, A.: Stabilization of metallic supercooled liquid and bulk amorphous alloys. Acta Mater. 48, 279 (2000).CrossRefGoogle Scholar
2Peker, A. and Johnson, W.L.: A highly processable metallic glass: Zr41.2Ti13.8Cu12.5Ni10.0Be22.5. Appl. Phys. Lett. 63, 2342 (1993).CrossRefGoogle Scholar
3Wang, W.H., Dong, C., and Shek, C.H.: Bulk metallic glass. Mater. Sci. Eng. Rep. 44, 45 (2004).CrossRefGoogle Scholar
4Schroers, J. and Johnson, W.L.: Ductile bulk metallic glass. Phys. Rev. Lett. 93, 255506 (2004).CrossRefGoogle ScholarPubMed
5Das, J., Tang, M.B., Kim, K.B., Theissmann, R., Baier, F., Wang, W.H., and Eckert, J.: “Work-hardenable” ductile bulk metallic glass. Phys. Rev. Lett. 94, 205501 (2005).CrossRefGoogle ScholarPubMed
6Spaepen, F.: On the fracture morphology of metallic glass. Acta Metall. 23, 615 (1975).CrossRefGoogle Scholar
7Flores, K.M.: Structural changes and stress state effects during inhomogeneous flow of metallic glasses. Scripta Mater. 54, 327 (2006).CrossRefGoogle Scholar
8Masumoto, T. and Maddin, R.: Structural stability and mechanical properties of amorphous metals. Acta Metall. 27, 47 (1979).Google Scholar
9Wright, W.J., Shear band processes in bulk metallic glass. Ph.D. Thesis, Stanford University, Stanford, CA, June 2003.Google Scholar
10Hufnagel, T.C.: Preface to viewpoint set on mechanical behavior of metallic glass. Scripta Mater. 54, 317 (2006).CrossRefGoogle Scholar
11Lewandowski, J.J., Wang, W.H., and Greer, A.L.: Intrinsic plasticity or brittleness of metallic glasses. Philos. Mag. Lett. 85, 77 (2005).CrossRefGoogle Scholar
12Wang, W.H.: Correlations between elastic moduli and properties in bulk metallic glasses. J. Appl. Phys. 99, 093506 (2006).CrossRefGoogle Scholar
13Kuhn, U., Eckert, J., Mattern, N., and Schultz, L.: ZrNbCuNiAl bulk metallic glass matrix composites containing dendritic bcc phase precipitates. Appl. Phys. Lett. 80, 2478 (2002).CrossRefGoogle Scholar
14Choi-Yim, H., Busch, R., Koster, U., and Johnson, W.L.: Synthesis and characterization of particulate reinforced Zr57Nb5Al10Cu15.4Ni12.6 bulk metallic glass composites. Acta Mater. 47, 2455 (1999).CrossRefGoogle Scholar
15Kim, C.P., Busch, R., Masuhr, A., Choi-Yim, H., and Johnson, W.L.: Processing of carbon-fiber-reinforced Zr41.2Ti13.8Cu12.5Ni10.0Be22.5 bulk metallic glass composites. Appl. Phys. Lett. 79, 1456 (2001).CrossRefGoogle Scholar
16Fan, C., Li, C.F., and Inoue, A.: Deformation behavior of Zr-based bulk nanocrystalline amorphous alloys. Phys. Rev., B 61, R3761 (2000).CrossRefGoogle Scholar
17Calin, M., Eckert, J., and Schultz, L.: Improved mechanical behavior of Cu–Ti-bassed bulk metallic glass by in situ formation of nanoscale precipitates. Scripta Mater. 48, 653 (2003).CrossRefGoogle Scholar
18Zhang, Z.F., He, G., Eckert, J., and Schultz, L.: Fracture mechanism in bulk metallic glassy materials. Phys. Rev. Lett. 91, 045505 (2003).CrossRefGoogle ScholarPubMed
19Ishimaru, M., Hirotsu, Y., Hata, S., Ma, C., Nishiyama, N., Amiya, K., and Inoue, A.: Structural characterization of Cu–Ti-based bulk metallic glass by advanced electron microscopy. Philos. Mag. Lett. 85, 125 (2005).CrossRefGoogle Scholar
20Ma, C.L., Soejima, H., Ishihara, S., Amiya, K., Nishiyama, N., and Inoue, A.: New Ti-based bulk glassy alloys with high glass-forming ability and superior mechanical properties. Mater. Trans., JIM 45, 3223 (2004).CrossRefGoogle Scholar
21Li, W.H., Zhang, T.H., Xing, D.M., Wei, B.C., Wang, Y.R., and Dong, Y.D.: Instrumented indentation study of plastic deformation in bulk metallic glass. J. Mater. Res. 21, 75 (2006).CrossRefGoogle Scholar
22Inoue, A., Zhang, W., Tsurui, T., Yavari, A.R., and Greer, A.L.: Unusual room-temperature compressive plasticity in nanocrystal-toughened bulk copper-zirconium glass. Philos. Mag. Lett. 85, 221 (2005).CrossRefGoogle Scholar
23Hajlaoui, K., Benameur, T., Vaughan, G., and Yavari, A.R.: Thermal expansion and indentation-induced free volume in Zr-based metallic glasses measured by real-time diffraction using synchrotron radiation. Scripta Mater. 51, 843 (2004).CrossRefGoogle Scholar
24Flores, K.M., Suh, D., Dauskardt, R.H., Asoka-Kumar, P., Sterne, P.A., and Howell, R.H.: Characterization of free volume in a bulk metallic glass using positron annihilation xspectroscopy. J. Mater. Res. 17, 1153 (2002).CrossRefGoogle Scholar