Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-28T16:43:15.023Z Has data issue: false hasContentIssue false
  • English
  • Français

Multiaxial deformation characteristic of a Zr-based bulk metallic glass: Variations of the plastic constraint factor underneath a spherical indenter

Published online by Cambridge University Press:  31 January 2011

Yun-Hee Lee ,
Ju-Young Kim ,
Un-Bong Baek  and
Seung-Hoon Nahm
Yun-Hee Lee*
Affiliation:
Division of Metrology for Quality Life, Korea Research Institute of Standards and Science, Daejeon 305-340, Korea
Ju-Young Kim
Affiliation:
Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea
Un-Bong Baek
Affiliation:
Division of Metrology for Quality Life, Korea Research Institute of Standards and Science, Daejeon 305-340, Korea
Seung-Hoon Nahm
Affiliation:
Division of Metrology for Quality Life, Korea Research Institute of Standards and Science, Daejeon 305-340, Korea
*
a)Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

Multiaxial deformation of Zr55Al10Ni5Cu30 metallic glass was investigated by instrumented indentation tests with a spherical indenter. Contrary to the elastic–rigid-plastic behavior of bulk metallic glasses (BMGs), indentation pressure showed a significant increase with increasing indentation strain, and it was ascribed to a rapid transition of the plastic constraint factor (PCF). However, it was impossible to measure the PCF values from the indentation pressures in the Zr-based BMG because information on uniaxial flow stress was insufficient due to the limited flow strain of 2.2%. Here we developed a PCF assessment method using a relative residual depth hf/hmax, which was experimentally confirmed by adopting it to spherical indentations of a steel sample having well-known flow properties. Flow properties of the BMG were calculated using the new PCF assessment method, and the effects of the materials pileup and low strain indentations on PCF and flow properties were discussed.

Keywords

AmorphousStress/strain relationshipHardness
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 10 , October 2007 , pp. 2895 - 2901
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

1Mukai, 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
2Johnson, W.L.: Bulk glass-forming metallic alloys: Science and technology. MRS Bull. 24, 42 1999CrossRefGoogle Scholar
3Zhang, Z.F., Eckert, J.Schultz, L.: Difference in compressive and tensile fracture mechanisms of Zr59Cu20Al10Ni8Ti3 bulk metallic glass. Acta Mater. 51, 1167 2003CrossRefGoogle Scholar
4Jiang, 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
5Conner, R.D., Li, Y., Nix, W.D.Johnson, W.L.: Shear band spacing under bending of Zr-based metallic glass plates. Acta Mater. 52, 2429 2004CrossRefGoogle Scholar
6Wright, W.J., Saha, R.Nix, W.D.: Deformation mechanisms of the Zr40Ti14Ni10Cu12Be24 bulk metallic glass. Mater. Trans., JIM 42, 642 2001CrossRefGoogle Scholar
7Schuh, C.A.Nieh, T.G.: A survey of instrumented indentation studies on metallic glasses. J. Mater. Res. 19, 46 2004CrossRefGoogle Scholar
8Jiang, W.H.Atzmon, M.: Rate dependence of serrated flow in a metallic glass. J. Mater. Res. 18, 755 2003CrossRefGoogle Scholar
9Antoniou, A., Bastawros, A.Biner, B.: Experimental observations of deformation behavior of bulk metallic glasses during wedge-like cylindrical indentation. J. Mater. Res. 22, 514 2007CrossRefGoogle Scholar
10Vaidyanathan, R., Dao, M., Ravichandran, G.Suresh, S.: Study of mechanical deformation in bulk metallic glass through instrumented indentation. Acta Mater. 49, 3781 2001CrossRefGoogle Scholar
11Charleux, L., Gravier, S., Verdier, M., Fivel, M.Blandin, J.J.: Indentation plasticity of amorphous and partially crystallized metallic glasses. J. Mater. Res. 22, 525 2007CrossRefGoogle Scholar
12Narasimhan, R.: Analysis of indentation of pressure sensitive plastic solids using the expanding cavity model. Mech. Mater. 36, 633 2004CrossRefGoogle Scholar
13Patnaik, M.N.M., Narasimhan, R.Ramamurty, U.: Spherical indentation response of metallic glasses. Acta Mater. 52, 3335 2004CrossRefGoogle Scholar
14Ai, K.Dai, L.H.: A new modified expanding cavity model for characterizing the spherical indentation behavior of bulk metallic glass with pile-up. Scripta Mater. 56, 761 2007CrossRefGoogle Scholar
15Tang, C., Li, Y.Zeng, K.: Characterization of mechanical properties of a Zr-based metallic glass by indentation techniques. Mater. Sci. Eng., A 384, 215 2004CrossRefGoogle Scholar
16Tabor, D.: The hardness of solids. Review Phys. Technol. 1, 145 1970CrossRefGoogle Scholar
17Johnson, K.L.: Contact Mechanics Cambridge University Press Cambridge, UK 1985CrossRefGoogle Scholar
18Ahn, J-H.Kwon, D.: Derivation of plastic stress–strain relationship from ball indentations: examination of strain definition and pileup effect. J. Mater. Res. 16, 3170 2001CrossRefGoogle Scholar
19Kim, J-Y., Lee, K-W., Lee, J-S.Kwon, D.: Determination of tensile properties by instrumented indentation technique: Representative stress and strain approach. Surf. Coat. Technol. 201, 4278 2006CrossRefGoogle Scholar
20Park, Y.J.Pharr, G.M.: Nanoindentation with spherical indenters: Finite element studies of deformation in the elastic-plastic transition regime. Thin Solid Films 447–448, 246 2004CrossRefGoogle Scholar
21Trichy, G.R., Scattergood, R.O., Koch, C.C.Murty, K.L.: Ball indentation tests for a Zr-based bulk metallic glass. Scripta Mater. 53, 1461 2005CrossRefGoogle Scholar
22Ramamurty, U., Jana, S., Kawamura, Y.Chattopadhyay, K.: Hardness and plastic deformation in a bulk metallic glass. Acta Mater. 53, 705 2005CrossRefGoogle Scholar
23Lee, Y-H., Kim, J-Y., Park, J-S., Nahm, S-H.Kwon, D.: Characterization of inelastic deformation in metallic glass using instrumented indentation. J. Mater. Process. Technol. 187–188, 794 2007CrossRefGoogle Scholar
24Bolshakov, A.Pharr, G.M.: Influences of pileup on the measurement of mechanical properties by load and depth-sensing indentation techniques. J. Mater. Res. 13, 1049 1998CrossRefGoogle Scholar
25Sakai, M., Akatsu, T.Numata, S.: Finite element analysis for conical indentation unloading of elastoplastic materials with strain hardening. Acta Mater. 52, 2359 2004CrossRefGoogle Scholar
26ASTM E 8: Standard Test Methods for Tension Testing of Metallic Materials. (ASTM International, West Conshohocken, PA,2001Google Scholar
27Oliver, W.C.Pharr, G.M.: An improved technique for determining hardness and elastic-modulus using load and displacement sensing indentation experiments. J. Mater. Res. 7, 1564 1992CrossRefGoogle Scholar
28Bhowmick, R., Raghavan, R., Chattopadhyay, K.Ramamurty, U.: Plastic flow softening in a bulk metallic glass. Acta Mater. 54, 4221 2006CrossRefGoogle Scholar
29Swain, M.V.: Mechanical property characterisation of small volumes of brittle materials with spherical tipped indenters. Mater. Sci. Eng., A 253, 160 1998CrossRefGoogle Scholar
30Chaudhri, M.Winter, M.: The load-bearing area of a hardness indentation. J. Phys. D: Appl. Phys. 21, 370 1988CrossRefGoogle Scholar
31Lee, Y-H., Baek, U., Kim, Y-I.Nahm, S-H.: On the measurement of pile-up corrected hardness based on the early Hertzian loading analysis. Mater. Lett. 61, 4039 2007CrossRefGoogle Scholar