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Effect of testing conditions on the compressive plasticity of bulk metallic glasses

Published online by Cambridge University Press:  19 August 2016

Yunpeng Jiang*
Affiliation:
State Key Laboratory of Mechanics and Control of Mechanical, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
*
a)Address all correspondence to this author. e-mail: ypjiang@nuaa.edu.cn
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Abstract

In this paper, the compressive behaviors of Zr-based bulk metallic glass (BMG) were experimentally studied under different testing conditions. To deeply reveal the inherent deformation mechanisms, numerical study was systematically conducted to analyze the shear banding evolution in BMGs, and the effect of testing machine stiffness, contact friction, and sample parallelism on the compressive ductility was therefore elucidated. Among them the effect of contact friction was carefully studied experimentally and the inherent deformation mechanisms was numerically analyzed in terms of the formation of shear bands. Free-volume theory was incorporated into ABAQUS finite element method code as a user material subroutine UMAT. The numerical method was firstly compared with the corresponding experimental results, and then parameter analyses were performed to discuss the impacts of testing conditions on the malleability of the BMG samples. The present work will shed some light on the interpretation of failure mechanisms in BMGs under different loading conditions.

Type
Articles
Copyright
Copyright © Materials Research Society 2016 

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References

REFERENCES

Park, E.S., Kim, D.H., Kim, H.J., Bae, J.C., and Huh, M.Y.: Plastic stress-strain behavior of a Zr-based bulk metallic glass at high strain rates in the supercooled liquid region. Mater. Sci. Eng. A 574, 54 (2013).CrossRefGoogle Scholar
Wu, F.F., Zhang, Z.F., Mao, S.X., and Eckert, J.: Effect of sample size on ductility of metallic glass. Philos. Mag. Lett. 89, 178 (2009).Google Scholar
Wu, F.F., Zhang, Z.F., and Mao, S.X.: Compressive properties of bulk metallic glass with small aspect ratio. J. Mater. Res. 22, 501 (2007).CrossRefGoogle Scholar
Zhang, Z.F., Zhang, H., Pan, X.F., Das, J., and Eckert, J.: Effect of aspect ratio on the compressive deformation and fracture behaviour of Zr-based bulk metallic glass. Philos. Mag. Lett. 85, 513 (2005).Google Scholar
Li, C., Jang, J.S.C., Li, J.B., Pan, D.J., Jian, S.R., Huang, J.C., and Nieh, T.G.: Numerical and experimental studies on the shear band intervention in zirconium based bulk metallic glass composites Zr53Cu22Ni9Al8Ta8 . Intermetallics 30, 111 (2012).Google Scholar
Wu, W.F., Li, Y., and Schuh, C.A.: Strength, plasticity and brittleness of bulk metallic glasses under compression: Statistical and geometric effects. Philos. Mag. 88, 71 (2008).CrossRefGoogle Scholar
Wu, F.F., Zheng, W., Wu, S.D., Zhang, Z.F., and Shen, J.: Shear stability of metallic glasses. Int. J. Plast. 27, 560 (2011).CrossRefGoogle Scholar
Spaepen, F.: A microscopic mechanism for steady state inhomogeneous flow in metallic glasses. Acta Metall. 25, 407 (1976).CrossRefGoogle Scholar
Steif, P.S., Spaepen, F., and Hutchinson, J.W.: Strain localization in amorphous metals. Acta Metall. 30, 447 (1982).CrossRefGoogle Scholar
Gao, Y.F.: An implicit finite element method for simulating inhomogeneous deformation and shear bands of amorphous alloys based on the free-volume model. Modell. Simul. Mater. Sci. Eng. 14, 1329 (2006).Google Scholar
ABAQUS Theory Manual (HKS Inc., Providence, 2010).Google Scholar
Jiang, Y.P.. Metall. Mater. Trans. A 47, 2481 (2016).Google Scholar
Ke, H.B., Zeng, J.F., Liu, C.T., and Yang, Y.: Structure heterogeneity in metallic glass: Modeling and experiment. J. Mater. Sci. Technol. 30, 560 (2014).Google Scholar
Huo, L.S., Zeng, J.F., Wang, W.H., Liu, C.T., and Yang, Y.: The dependence of shear modulus on dynamic relaxation and evolution of local structural heterogeneity in a metallic glass. Acta Mater. 61, 4329 (2013).CrossRefGoogle Scholar
Ding, J., Patinet, S., Falk, M.L., Cheng, Y.Q., and Ma, E.: Soft spots and their structural signature in a metallic glass. PNAS 111, 14052 (2014).CrossRefGoogle Scholar
Jiang, Y.P.: Numerical study of the notch effect on the ductility of bulk metallic glasses (BMGs) based on the free-volume theory. J. Mater. Res. 31, 765 (2016).Google Scholar
Jiang, Y.P. and Qiu, K.: Computational micromechanics analysis of toughening mechanisms of particle-reinforced bulk metallic glass composites. Mater. Des. 65, 410 (2015).CrossRefGoogle Scholar
Qu, R.T. and Zhang, Z.F.: Compressive fracture morphology and mechanism of metallic glass. J. Appl. Phys. 114, 193504 (2013).CrossRefGoogle Scholar