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Effects of sample geometry on deformation modes of bulk metallic glasses at the nano/micrometer scale

Published online by Cambridge University Press:  31 January 2011

Jianchao Ye ,
Jian Lu ,
Yong Yang  and
Peter K. Liaw
Jianchao Ye
Affiliation:
The Department of Mechanical Engineering, the Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People’s Republic of China
Jian Lu
Affiliation:
The Department of Mechanical Engineering, the Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People’s Republic of China
Yong Yang*
Affiliation:
The Department of Mechanical Engineering, the Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People’s Republic of China
Peter K. Liaw
Affiliation:
The Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996-2200
*
a) Address all correspondence to this author. e-mail: mmyyang@polyu.edu.hk
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Abstract

Intense debates have been prompted concerning whether homogeneous deformation can be achieved in bulk metallic glasses at room temperature through the suppression of shear bands at the submicron scale. In this short communication, we demonstrate that multiple shear banding can be successfully attained via a proper modification of the microsample geometry, resulting in the appearance of a homogeneous deformation mode at the submicron scale. However, the apparent deformation homogeneity in our microcompression experiment is a manifestation of the sample geometry effect on the propagation rather than nucleation of shear bands.

Keywords

AmorphousMetalMorphology

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Type
Rapid Communications
Information
Journal of Materials Research , Volume 24 , Issue 11 , November 2009 , pp. 3465 - 3468
Copyright
Copyright © Materials Research Society 2009

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References

1.Greer, A.L.: Metallic glasses. Science 267, 1947 (1995).CrossRefGoogle ScholarPubMed
2.Shan, Z.W., Li, J., Cheng, Y.Q., Minor, A.M., Asif, S.A.Syed, Warren, O.L., and Ma, E.: Plastic flow and failure resistance of metallic glass: Insight from in situ compression of nanopillar. Phys. Rev. B: Condens. Matter 77, 155419 (2008).CrossRefGoogle Scholar
3.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 (2007).CrossRefGoogle ScholarPubMed
4.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
5.Schuster, B.E., Wei, Q., Hufnagel, T.C., and Ramesh, K.T.: Sizeindependent strength and deformation mode in compression of a Pd-based metallic glass. Acta Mater. 56, 5091 (2008).CrossRefGoogle Scholar
6.Wu, X.L., Guo, Y.Z., Wei, Q. and Wang, W.H.: Prevalence of shear banding in compression of Zr41Ti14Cu12.5Ni10Be22.5pillars as small as 150 nm in diameter. Acta Mater. 57, 3562 (2009).CrossRefGoogle Scholar
7.Dubach, A., Raghavan, R., Loffler, J.F., Michler, J., and Ramaurty, U.: Micropillar compression studies on a bulk metallic glass in different structural states. Scr. Mater. 60, 567 (2009).CrossRefGoogle Scholar
8.Yang, Y., Ye, J.C., Lu, J., Liu, F.X., and Liaw, P.K.: Effects of specimen geometry and base material on the mechanical behavior of focused-ion-beam-fabricated metallic-glass micropillars. Acta Mater. 57, 1613 (2009).CrossRefGoogle Scholar
9.Cheng, S., Wang, X.L., Choo, H., and Liaw, P.K.: Global melting of Zr57Ti5Ni8Cu20Al10bulk metallic glass under microcompression. Appl. Phys. Lett. 91, 201917 (2007).CrossRefGoogle Scholar
10.Lee, C.J., Huang, J.C., and Nieh, T.G.: Sample size effect and microcompression of Mg65Cu25Gd10metallic glass. Appl. Phys. Lett. 91, 161913 (2007).CrossRefGoogle Scholar
11.Ye, J.C., Lu, J., Yang, Y., and Liaw, P.K.: Extraction of bulk metallic-glass yield strengths using tapered micropillars in microcompression experiments. Intermetallics (2009; doi: 10.1016/ j.intermet.2009.08.011).Google Scholar
12.Wang, Y., Li, J., Hamza, A.V., and Barbee, T.W.: Ductile crystalline- amorphous nanolaminates. Proc. Nat. Acad. Sci. U.S.A. 104(27), 11155 (2007).CrossRefGoogle ScholarPubMed
13.Schuh, C.A., Lund, A.C., and 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 (2004).CrossRefGoogle Scholar
14.Li, Q.K. and Li, M.: Assessing the critical sizes for shear band formation in metallic glasses from molecular dynamics simulation. Appl. Phys. Lett. 91, 231905 (2007).CrossRefGoogle Scholar
15.Shimizu, F., Ogata, S., and Li, J.: Yield point of metallic glass. Acta Mater. 54, 4293 (2006).CrossRefGoogle Scholar
16.Schuh, C.A., Hufnagel, T.C., and Ramamurty, U.: Mechanical behavior of amorphous alloys. Acta Mater. 55, 4067 (2007).CrossRefGoogle Scholar
17.Ye, J.C., Lu, J., Yang, Y., and Liaw, P.K.: Study of the intrinsic ductile to brittle transition mechanism of metallic glasses. Acta Mater. (2009; doi: 10.1016/j.actamat. 2009.08.029).CrossRefGoogle Scholar