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Effect of frame stiffness on the deformation behavior of bulk metallic glass

Published online by Cambridge University Press:  31 January 2011

Y. Li*
Affiliation:
Department of Materials Science and Engineering, Faculty of Engineering, National University of Singapore, 117576 Singapore
H.J. Gao*
Affiliation:
Division of Engineering, Brown University, Providence, Rhode Island 02912
*
a)Address all correspondence to this author. e-mail: [email protected]
b)Address all correspondence to this author. e-mail: [email protected]
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Abstract

It has been shown that the stability of shear banding and plasticity of bulk metallic glasses (BMGs) can be strongly influenced by the machine stiffness. Here, we demonstrated that the practice of adding a frame parallel to the sample is quantitatively equivalent to increasing the machine stiffness by the frame stiffness. A series of carefully designed experiments were conducted to verify such an effect, showing controllably enhanced plasticity of BMG samples.

Type
Articles
Copyright
Copyright © Materials Research Society 2010

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References

REFERENCES

1.Han, Z., Wu, W.F., Li, Y., Wei, Y.J., Gao, H.J.An instability index of shear band for plasticity in metallic glasses. Acta Mater. 57, 1367 (2009)CrossRefGoogle Scholar
2.Murata, T., Masumoto, T., Sakai, M.Slip deformation and critical shear stress of amorphous Pd–Si alloyRapidly Quenched Metals III Vol. II edited by B. Cantor (The Metals Society, London 1978)401Google Scholar
3.Kimura, H., Masumoto, T.A model of the mechanics of serrated flow in an amorphous alloy. Acta Metall. 31, 231 (1983)CrossRefGoogle Scholar
4.Bei, H., Xie, S., George, E.P.Softening caused by profuse shear banding in a bulk metallic glass. Phys. Rev. Lett. 96, 105503 (2006)CrossRefGoogle Scholar
5.Hellan, K.Introduction to Fracture Mechanics (McGraw-Hill, New York 1984)Google Scholar
6.Guo, H., Yan, P.F., Wang, Y.B., Tan, J., Zhang, Z.F., Sui, M.L., Ma, E.Tensile ductility and necking of metallic glass. Nat. Mater. 6, 735 (2007)CrossRefGoogle ScholarPubMed
7.Han, Z., Li, Y.Cooperative shear and catastrophic fracture of bulk metallic glasses from a shear-band instability perspective. J. Mater. Res. 24, 3620 (2009)CrossRefGoogle Scholar
8.Han, Z., Yang, H., Wu, W.F., Li, Y.Invariant critical stress for shear banding in a bulk metallic glass. Appl. Phys. Lett. 93, 231912 (2008)CrossRefGoogle Scholar
9.Pampillo, C.A., Reimschuessel, A.C.The fracture topography of metallic glasses. J. Mater. Sci. 9, 718 (1974)CrossRefGoogle Scholar
10.Song, S.X., Bei, H., Wadsworth, J., Nieh, T.G.Flow serration in a Zr-based bulk metallic glass in compression at low strain rates. Intermetallics 16, 813 (2008)CrossRefGoogle Scholar