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Computational and Experimental Characterization of Indentation Creep

Published online by Cambridge University Press:  01 February 2011

Ming Dao ,
Hidenari Takagi ,
Masami Fujiwara  and
Masahisa Otsuka
Ming Dao
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Hidenari Takagi
Affiliation:
Graduate Student, Department of Mechanical Engineering, College of Engineering, Nihon University, Koriyama, Fukushima 963–8642, Japan.
Masami Fujiwara
Affiliation:
Department of Applied Physics, College of Engineering, Nihon University, Koriyama, Fukushima 963–8642, Japan.
Masahisa Otsuka
Affiliation:
Department of Materials Science and Engineering, Faculty of Engineering, Shibaura Institute of Technology, Minatoku, Tokyo 108x–8548, Japan.
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ABSTRACT:Detailed finite-element computations and carefully designed indentation creep experiments were carried out in order to establish a robust and systematic method to accurately extract creep properties during indentation creep tests. Finite-element simulations confirmed that, for a power law creep material, the indentation creep strain field is indeed self-similar in a constant-load indentation creep test, except during short transient periods at the initial loading stage and when there is a deformation mechanism change. Self-similar indentation creep leads to a constitutive equation from which the power-law creep exponent, n, the activation energy for creep, Qc and so on can be evaluated robustly. Samples made from an Al-5.3mol%Mg solid solution alloy were tested at temperatures ranging from 573 K to 773 K. The results are in good agreement with those obtained from conventional uniaxial creep tests in the dislocation creep regime.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 795: Symposium U – Thin Films - Stresses and Mechanical Properties X , 2003 , U8.23
Copyright
Copyright © Materials Research Society 2004

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References

REFERENCES

1. Tabor, D, The hardness of metals. Oxford classic texts in the physical sciences. 1951, Oxford: Clarendon Press.Google Scholar
2. Oliver, WC, Pharr, GM. An Improved Technique for Determining Hardness and Elastic-Modulus Using Load and Displacement Sensing Indentation Experiments. J. Mater. Res., 1992; 7: 1564.Google Scholar
3. Field, JS, Swain, M V. Determining the Mechanical-Properties of Small Volumes of Material from Submicrometer Spherical Indentations. J. Mater. Res., 1995; 10: 101.Google Scholar
4. Gerberich, WW, Nelson, JC, Lilleodden, ET, Anderson, P, Wyrobek, JT. Indentation induced dislocation nucleation: The initial yield point. Acta Materialia, 1996; 44: 3585.Google Scholar
5. Dao, M, Chollacoop, N, Van Vliet, KJ, Venkatesh, TA, Suresh, S. Computational modeling of the forward and reverse problems in instrumented sharp indentation. Acta Materialia, 2001; 49: 3899.Google Scholar
6. Mulhearn, TO, Tabor, D. J. Inst. Metals, 1960; 89: 7.Google Scholar
7. Atkins, A G, Silverio, A, Tabor, D. J. Inst. Metals, 1966; 94: 369.Google Scholar
8. Li, WB, Henshall, JL, Hooper, RM, Easterling, KE. The Mechanisms of Indentation Creep. Acta Metall., 1991; 39: 3099.Google Scholar
9. Sargent, PM, Ashby, MF. Indentation Creep. Materials Science and Technology, 1992; 8: 594.Google Scholar
10. Prakash, O. Indentation Creep. in The Johannes Weertman symposium. 1996. Anaheim, California U.S.A.: The Minerals, Metals & Materials Society.Google Scholar
11. Lucas, BN, Oliver, WC. Indentation power-law creep of high-purity indium. Metall. Trans. A., 1999; 30: 601.Google Scholar
12. Mackerle, J. Finite element and boundary element simulations of indentation problems - A bibliography (1997–2000). Finite Elements in Analysis and Design, 2001; 37: 811.Google Scholar
13. Fujiwara, M, Otsuka, M. Characterization of micro-indentation creep in beta-Sn single crystals at elevated temperatures. Journal of the Japan Institute of Metals, 1999; 63: 760.Google Scholar
14. Fujiwara, M, Otsuka, M. Indentation creep of beta-Sn and Sn-Pb eutectic alloy. Mater. Sci. Eng. A, 2001; 319: 929.Google Scholar
15. Cheng, YT, Cheng, CM. Scaling relationships in indentation of power-law creep solids using self-similar indenters. Phil. Mag. Lett., 2001; 81: 9.Google Scholar
16. Mukherjee, AK, Bird, JE, Dorn, JE. Trans. ASM, 1969; 62: 155.Google Scholar
17. Cadek, J, Creep in metallic materials. 1988, Amsterdam: Elsevier.Google Scholar
18. Takagi, H, Dao, M, Fujiwara, M, Otsuka, M. Experimental and computational creep characterization of Al-Mg solid solution alloy through instrumented indentation. Phil. Mag., 2003; 83: 3959.Google Scholar
19. Johnson, KL. J. Mech. Phys. Solids, 1970; 18: 115.Google Scholar
20. Bolshakov, A, Pharr, GM. Influences of pileup on the measurement of mechanical properties by load and depth sensing indentation techniques. J. Mater. Res., 1998; 13: 1049.Google Scholar
21. Mayo, MJ, Nix, WD. A Micro-Indentation Study of Superplasticity in Pb, Sn, and Sn- 38 Wt-Percent-Pb. Acta Metall., 1988; 36: 2183.Google Scholar
22. Asif, SAS, Pethica, JB. Nanoindentation creep of single-crystal tungsten and gallium arsenide. Philos. Mag. A, 1997; 76: 1105.Google Scholar
23. Horiuchi, R, Otsuka, M. Trans. Japan Inst. Metals, 1972, 13: 283.Google Scholar
24. Kucharov, K, Saxl, I, Cadek, J. Effective Stress in Steady-State Creep in an Al-5.5 At.Percent Mg Solid-Solution. Acta Metall., 1974; 22: 465.Google Scholar
25. Pahutova, M, Cadek, J. 2 Types of Creep-Behavior of Fcc Solid-Solution Alloys. Physica Status Solidi A, 1979; 56: 305.Google Scholar
26. Brandes, EA, Brook, GB, Smithells, CJ, Smithells metals reference book. 7th ed / edited by Brandes, E.A. and Brook, G.B., 1998, Oxford, Boston: Butterworth-Heinemann.Google Scholar