Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-24T21:40:27.405Z Has data issue: false hasContentIssue false
  • English
  • Français

Strain-rate dependence of hardening and softening in compression of a bulk-metallic glass

Published online by Cambridge University Press:  31 January 2011

W.H. Jiang ,
F.X. Liu ,
F. Jiang ,
K.Q. Qiu ,
H. Choo  and
P.K. Liaw
W.H. Jiang*
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996
F.X. Liu
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996
F. Jiang
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996
K.Q. Qiu
Affiliation:
School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, Liaoning 110023, People’s Republic of China
H. Choo
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996; and Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
P.K. Liaw
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996
*
a)Address all correspondence to this author. email: [email protected]
Get access

Abstract

We investigated the effect of strain rate on the plastic-flow stress of a Zr-based bulk-metallic glass in quasistatic compression. The results indicate that the plastic-flow stress is dependent on the strain rate: an increase in the strain rate leads to a decrease in the plastic-flow stress, and vice versa. However, simply loading, unloading, and reloading at a constant strain rate do not change the plastic-flow stress. This strain-rate dependence of the plastic-flow stress may be related to shear-banding operations.

Keywords

AmorphousStress/strain relationship
Type
Rapid Communications
Information
Journal of Materials Research , Volume 22 , Issue 10 , October 2007 , pp. 2655 - 2658
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.)

References

REFERENCES

1Spaepen, F.: A microscopic mechanism for steady state inhomogeneous flow in metallic glasses. Acta Metall. 25, 407 1977CrossRefGoogle Scholar
2Spaepen, F.Taub, A.I.: Amorphous Metallic Alloys: Flow and Fracture Luborsky, F.E.: Butterworths London 1983 248–256Google Scholar
3Wright, W.J., Saha, R.Nix, W.D.: Deformation mechanisms of the Zr40Ti14Ni10Cu12Be24 bulk metallic glass. Mater. Trans., JIM 42, 642 2001CrossRefGoogle Scholar
4Mukai, T., Nieh, T.G., Kawamura, Y., Inoue, A.Higashi, K.: Dynamic response of a Pd40Ni40P20 bulk metallic glass in tension. Scripta Mater. 46, 43 2002CrossRefGoogle Scholar
5Kimura, H.Masumoto, T.: A model of the mechanics of serrated flow in an amorphous alloy. Acta Metall. 31, 231 1983CrossRefGoogle Scholar
6Wright, W.J., Schwarz, R.B.Nix, W.D.: Localized heating during serrated plastic flow in bulk metallic glasses. Mater. Sci. Eng., A 319-321, 229 2001CrossRefGoogle Scholar
7Schuh, C.A.Nieh, T.G.: A nanoindentation study of serrated flow in bulk metallic glasses. Acta Mater. 51, 87 2003CrossRefGoogle Scholar
8Schuh, C.A., Lund, A.C.Nieh, T.G.: New regime of homogeneous flow in the deformation map of metallic glasses: Elevated temperature nanoindentation experiments and mechanistic modeling. Acta Mater. 52, 5879 2004CrossRefGoogle Scholar
9Zhang, G.P., Wang, W., Zhang, B., Tan, J.Liu, C.S.: On rate-dependent serrated flow behavior in amorphous metals during nanoindentation. Scripta Mater. 52, 1147 2005CrossRefGoogle Scholar
10Schuh, C.A., Argon, A.S., Nieh, T.G.Wadsworth, J.: The transition from localized to homogeneous plasticity during nanoindentation of an amorphous metal. Philos. Mag. 83, 2585 2003CrossRefGoogle Scholar
11Jiang, W.H.Atzmon, M.: Rate dependence of serrated flow in a metallic glass. J. Mater. Res. 18, 755 2003CrossRefGoogle Scholar
12Jiang, W.H., Fan, G.J., Liu, F.X., Wang, G.Y., Choo, H.Liaw, P.K.: Rate-dependence of shear banding and serrated flows in a bulk-metallic glass. J. Mater. Res. 21, 2164 2006CrossRefGoogle Scholar
13Jiang, W.H., Fan, G.J., Liu, F.X., Wang, G.Y., Choo, H.Liaw, P.K.: Spatiotemporally inhomogeneous plastic flows of a bulk-metallic glass. Int. J. Plast. (in press)Google Scholar
14Bei, H., Xie, S.George, E.P.: Softening caused by profuse shear banding in a bulk metallic glass. Phys. Rev. Lett. 96, 105503 2006CrossRefGoogle Scholar
15Yang, B., Riester, L.Nieh, T.G.: Strain hardening and recovery in a bulk metallic glass under nanoindentation. Scripta Mater. 54, 1277 2006CrossRefGoogle Scholar
16Jiang, W.H., Fan, G.J., Choo, H.Liaw, P.K.: Ductility of a Zr-based bulk metallic glass with different specimen’s geometries. Mater. Lett. 60, 3537 2006CrossRefGoogle Scholar
17Zhang, Z.F., Zhang, H., Pan, X.F., Das, J.Eckert, J.: Effect of aspect ratio of Zr-based bulk metallic glass. Philos. Mag. Lett. 85, 513 2005CrossRefGoogle Scholar
18Torre, F.H.D., Dubach, A., Siegrist, M.E.Loffler, J.F.: Negative strain rate sensitivity in bulk metallic glass and its similarities with the dynamic strain aging effect during deformation. Appl. Phys. Lett. 89, 091918 2006CrossRefGoogle Scholar
19Jiang, W.H.Atzmon, M.: The effect of compression and tension on shear-band structure and nanocrystallization in amorphous Al90Fe5Gd5: A high–resolution transmission-electron-microscopy study. Acta Mater. 51, 4095 2003CrossRefGoogle Scholar
20Flores, K.M., Suh, D., Dauskardt, R.H., Asoka-Kumar, P., Sterne, P.A.Howell, R.H.: Characterization of free volume in a bulk metallic glass using positron annihilation spectroscopy. J. Mater. Res. 17, 1153 2002CrossRefGoogle Scholar
21Li, J., Wang, Z.L.Hufnagel, T.C.: Characterization of nanometer-scale defects in metallic glasses by quantitative high-resolution transmission electron microscopy. Phys. Rev. B 65, 144 2002CrossRefGoogle Scholar
22Jiang, W.H., Pinkerton, F.E.Atzmon, M.: Mechanical behavior of shear bands and the effect of their relaxation in a rolled amorphous Al-based alloy. Acta Mater. 53, 3469 2005CrossRefGoogle Scholar
23Jiang, W.H.Atzmon, M.: Mechanically-induced nanocrystallization and defects in amorphous alloys: High-resolution transmission-electron-microscopy study. Scripta Mater. 54, 333 2006CrossRefGoogle Scholar
24Jiang, W.H., Pinkerton, F.E.Atzmon, M.: Mechanical behavior of shear bands and the effect of their relaxation in a rolled amorphous Al-based alloy. J. Mater. Res. 20, 696 2005CrossRefGoogle Scholar
25Jiang, W.H., Pinkerton, F.E.Atzmon, M.: The effect of strain rate on the formation of nanocrystalline Al in an Al-based amorphous alloy during nanoindentation. J. Appl. Phys. 93, 9287 2003CrossRefGoogle Scholar
26Jiang, W.H., Pinkerton, F.E.Atzmon, M.: Deformation-induced nanocrystallization in an Al-based amorphous alloy at a subambient temperature. Scripta Mater. 48, 1195 2003CrossRefGoogle Scholar
27Kim, J.J., Choi, Y., Suresh, S.Argon, A.S.: Nanocrystallization during nanoindentation of a bulk amorphous metal alloy at room temperature. Science 295, 654 2002CrossRefGoogle ScholarPubMed
28Jiang, W.H.Atzmon, M.: Mechanical strength of nanocrystalline/amorphous Al90Fe5Gd5 composites formed by rolling. Appl. Phys. Lett. 86, 151916 2005CrossRefGoogle Scholar