Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-04T19:37:29.776Z Has data issue: false hasContentIssue false
  • English
  • Français

Dominant shear bands observed in amorphous ZrCuAl nanowires under simulated compression

Published online by Cambridge University Press:  09 January 2012

Qiran Xiao ,
H.W. Sheng  and
Yunfeng Shi
Qiran Xiao
Affiliation:
Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180
H.W. Sheng
Affiliation:
School of Physics, Astronomy and Computational Sciences, George Mason University, Fairfax, Virginia 22030
Yunfeng Shi*
Affiliation:
Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180
*
Address all correspondence to Yunfeng Shi at[email protected]
Get access

Abstract

We observed the formation of dominant shear bands in model ZrCuAl metallic glass (MG) nanowires (18-nm-long) in molecular dynamics simulations, which implies size-independent incipient plasticity in MG materials. The MG nanowires were prepared using the simulated casting technique to ensure proper relaxation of sample surfaces. Under uniaxial compression, shear bands initiate at the surfaces and lead to reduced icosahedral short-range order. The shear band formation is sensitive to sample thermal history, which calls for careful consideration of sample preparation effects in both experimental and numerical studies of size effect in MG samples.

Type
Rapid Communications
Information
MRS Communications , Volume 2 , Issue 1 , March 2012 , pp. 13 - 16
Copyright
Copyright © Materials Research Society 2012

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

1.Schuh, C., Hufnagel, T., and Ramamurty, U.: Mechanical behavior of amorphous alloys. Acta Mater. 55, 4067–4109 (2007).CrossRefGoogle Scholar
2.Greer, A.L.: Metallic glasses…on the threshold. Mater. Today 12, 14–22 (2009).CrossRefGoogle Scholar
3.Volkert, C.A., Donohue, A., and Spaepen, F.: Effect of sample size on deformation in amorphous metals. J. Appl. Phys. 103, 083539 (2008).CrossRefGoogle Scholar
4.Nakayama, K., Yokoyama, Y., Ono, T., Chen, M., Akiyama, K., Sakurai, T., and Inoue, A.: Controlled formation and mechanical characterization of metallic glassy nanowires. Adv. Mater. 22, 872 (2010).CrossRefGoogle ScholarPubMed
5.Jang, D. and Greer, J.R.: Transition from a strong-yet-brittle to a stronger-and-ductile state by size reduction of metallic glasses. Nat. Mater. 9, 215–219 (2010).CrossRefGoogle ScholarPubMed
6.Guo, H., Yan, P.F., Wang, Y.B., Tan, J., Zhang, Z.F., Sui, M.L., and Ma, E.: Tensile ductility and necking of metallic glass. Nat. Mater. 6, 735–739 (2007).CrossRefGoogle ScholarPubMed
7.Yavari, A.R., Georgarakis, K., Botta, W.J., Inoue, A., and Vaughan, G.: Homogenization of plastic deformation in metallic glass foils less than one micrometer thick. Phys. Rev. B 82, 172202 (2010).CrossRefGoogle Scholar
8.Bharathula, A., Lee, S.W., Wright, W.J., and Flores, K.M.: Compression testing of metallic glass at small length scales: effects on deformation mode and stability. Acta Mater. 58, 5789–5796 (2010).CrossRefGoogle Scholar
9.Jang, D., Gross, C.T., and Greer, J.R.: Effects of size on the strength and deformation mechanism in Zr-based metallic glasses. Int. J. Plast. 27, 858–867 (2011).CrossRefGoogle Scholar
10.Chen, C.Q., Pei, Y.T., Kuzmin, O., Zhang, Z.F., Ma, E., and Hosson, J.: Intrinsic size effects in the mechanical response of taper-free nanopillars of metallic glass. Phys. Rev. B 83, 180201 (2011).CrossRefGoogle Scholar
11.Wu, X.L., Guo, Y.Z., Wei, Q., and Wang, W.H.: Prevalence of shear banding in compression of Zr41Ti14Cu12.5Ni10Be22.5 pillars as small as 150 nm in diameter. Acta Mater. 57, 3562–3571 (2009).CrossRefGoogle Scholar
12.Dubach, A., Raghavan, R., Löffler, J.F., Michler, J., and Ramamurty, U.: Micropillar compression studies on a bulk metallic glass in different structural states. Scripta Mater. 60, 567–570 (2009).CrossRefGoogle Scholar
13.Schuster, B.E., Wei, Q., Hufnagel, T.C., and Ramesh, K.T.: Size-independent strength and deformation mode in compression of a Pd-based metallic glass. Acta Mater. 56, 5091–5100 (2008).CrossRefGoogle Scholar
14.Shi, Y. and Falk, M.: Atomic-scale simulations of strain localization in three-dimensional model amorphous solids. Phys. Rev. B 73, 214201 (2006).CrossRefGoogle Scholar
15.Cheng, Y.Q., Cao, A.J., and Ma, E.: Correlation between the elastic modulus and the intrinsic plastic behavior of metallic glasses: the roles of atomic configuration and alloy composition. Acta Mater. 57, 3253–3267 (2009).CrossRefGoogle Scholar
16.Li, Q.K. and Li, M.: Molecular dynamics simulation of intrinsic and extrinsic mechanical properties of amorphous metals. Intermetallics 14, 1005–1010 (2006).CrossRefGoogle Scholar
17.Cheng, Y.Q., Cao, A.J., Sheng, H.W., and Ma, E.: Local order influences initiation of plastic flow in metallic glass: effects of alloy composition and sample cooling history. Acta Mater. 56, 5263–5275 (2008).CrossRefGoogle Scholar
18.Shi, Y.: Size-independent shear band formation in amorphous nanowires made from simulated casting. Appl. Phys. Lett. 96, 121909 (2010).CrossRefGoogle Scholar
19.Cheng, Y., Ma, E., and Sheng, H.: Atomic level structure in multicomponent bulk metallic glass. Phys. Rev. Lett. 102, 245501 (2009).CrossRefGoogle ScholarPubMed
20.Shi, Y. and Falk, M.: Does metallic glass have a backbone? The role of percolating short range order in strength and failure. Scr. Mater. 54, 381–386 (2006).CrossRefGoogle Scholar
21.Yokoyama, Y., Yamasaki, T., Liaw, P.K., and Inoue, A.: Study of the structural relaxation-induced embrittlement of hypoeutectic Zr–Cu–Al ternary bulk glassy alloys. Acta Mater. 56, 6097–6108 (2008).CrossRefGoogle Scholar
22.Gu, X.J., Poon, S.J., Shiflet, G.J., and Lewandowski, J.J.: Ductile-to-brittle transition in a Ti-based bulk metallic glass. Scr. Mater. 60, 1027–1030 (2009).CrossRefGoogle Scholar
23.Kumar, G., Rector, D., Conner, R.D., and Schroers, J.: Embrittlement of Zr-based bulk metallic glasses. Acta Mater. 57, 3572–3583 (2009).CrossRefGoogle Scholar
24.Zhang, H., Maiti, S., and Subhash, G.: Evolution of shear bands in bulk metallic glasses under dynamic loading. J. Mech. Phys. Solids 56, 2171–2187 (2008).CrossRefGoogle Scholar
25.Lee, C.J., Lai, Y.H., Huang, J.C., Du, X.H., Wang, L., and Nieh, T.G.: Strength variation and cast defect distribution in metallic glasses. Scr. Mater. 63, 105–108 (2010).CrossRefGoogle Scholar
Supplementary material: File

Xiao Supplementary Figures

Xiao Supplementary Figures

Download Xiao Supplementary Figures(File)
File 4.6 MB