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A new nanoindentation creep technique using constant contact pressure

Published online by Cambridge University Press:  02 July 2019

Olena Prach ,
Christian Minnert ,
Kurt E. Johanns  and
Karsten Durst
Olena Prach*
Affiliation:
Physical Metallurgy, Materials Science, Technische Universität Darmstadt, Darmstadt 64287, Germany
Christian Minnert
Affiliation:
Physical Metallurgy, Materials Science, Technische Universität Darmstadt, Darmstadt 64287, Germany
Kurt E. Johanns
Affiliation:
Physical Metallurgy, Materials Science, Technische Universität Darmstadt, Darmstadt 64287, Germany
Karsten Durst
Affiliation:
Physical Metallurgy, Materials Science, Technische Universität Darmstadt, Darmstadt 64287, Germany
*
a)Address all correspondence to this author. e-mail: prach@phm.tu-darmstadt.de
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Abstract

A new constant contact pressure (CCP) indentation creep method is presented, which is based on keeping the mean contact pressure as defined through Sneddon’s hardness constant, until a steady-state strain rate is achieved. This is in contrast to the conventional constant load–hold (CLH) creep experiments, where the load is held constant and relaxation in both hardness and strain rate occurs at the same time. Besides controlling the mean contact pressure, the dynamic stiffness is furthermore used to assess the indentation depth, thereby minimizing thermal drift influence and pile-up or sink-in effects during long-term experiments. The CCP method has been tested on strain rate sensitive ultrafine-grained (UFG) CuZn30 and UFG CuZn5 as well as on fused silica, comparing the results with those of strain rate jump tests as well as the CLH nanoindentation creep tests. With the CCP method, strain rates from 5 × 10−4 s−1 down to 5 × 10−6 s−1 can be achieved, keeping the mean contact pressure constant over a long period of time, in contrast to the CLH method. The CCP technique thus offers the possibility of performing long-term creep experiments while retaining the contact stress underneath the tip constant.

Keywords

nano-indentationnanostructurestrengthactivation analysis
Type
Article
Information
Journal of Materials Research , Volume 34 , Issue 14 , 28 July 2019 , pp. 2492 - 2500
Copyright
Copyright © Materials Research Society 2019 

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References

Oliver, W.C. and Pharr, G.M.: An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments. J. Mater. Res. 7, 1564 (1992).CrossRefGoogle Scholar
Oliver, W.C. and Pharr, G.M.: Measurement of hardness and elastic modulus by instrumented indentation. Advances in understanding and refinements to methodology. J. Mater. Res. 19, 3 (2004).CrossRefGoogle Scholar
Hay, J.L. and Pharr, G.M.: Instrumented indentation testing. Kuhn, H., and Medlin, D. In ASM Handbook Volume 8: Mechanical Testing and Evaluation, 10th ed. (ASM International, Materials Park, 2000), pp. 232–243.Google Scholar
Hay, J.: Introduction to instrumented indentation testing. Exp. Tech. 33, 66 (2009).CrossRefGoogle Scholar
Lawn, B.R. and Marshall, D.B.: Hardness, toughness, and brittleness: An indentation analysis. J. Am. Ceram. Soc. 62, 347 (1979).CrossRefGoogle Scholar
Phani, P.S. and Oliver, W.C.: A direct comparison of high temperature nanoindentation creep and uniaxial creep measurements for commercial purity aluminum. Acta Mater. 111, 31 (2016).CrossRefGoogle Scholar
Maier, V., Durst, K., Mueller, J., Backes, B., Höppel, H.W., and Göken, M.: Nanoindentation strain-rate jump tests for determining the local strain-rate sensitivity in nanocrystalline Ni and ultra fine-grained Al. J. Mater. Res. 26, 1421 (2011).CrossRefGoogle Scholar
Maier, V., Merle, B., Göken, M., and Durst, K.: An improved long-term nanoindentation creep testing approach for studying the local deformation processes in nanocrystalline metals at room and elevated temperatures. J. Mater. Res. 28, 1177 (2013).CrossRefGoogle Scholar
Mulhearn, T.O. and Tabor, D.: Creep and hardness of metals: A physical study. J. Inst. Met. 89, 7 (1960).Google Scholar
Durst, K. and Maier, V.: Dynamic nanoindentation testing for studying thermally activated processes from single to nanocrystalline metals. Curr. Opin. Solid State Mater. Sci. 19, 340 (2015).CrossRefGoogle Scholar
Maier, V., Leitner, A., Pippan, R., and Kiener, D.: Thermally activated deformation behavior of UFG-Au Environmental issues during long-term and high-temperature nanoindentation testing. JOM 67, 2934 (2015).CrossRefGoogle ScholarPubMed
Mayo, M.J., Siegel, R.W., Narayanasamy, A., and Nix, W.D.: Mechanical properties of nanophase TiO2 as determined by nanoindentation. J. Mater. Res. 5, 1073 (1990).CrossRefGoogle Scholar
Lafontaine, W.R., Yost, B., and Black, R.D.: Indentation load relaxation experiments with indentation depth in the submicron range. Mater. Res. 5, 2100 (1990).CrossRefGoogle Scholar
Poisl, W.H., Oliver, W.C., and Fabes, B.D.: The relationship between indentation and uniaxial creep in amorphous selenium. J. Mater. Res. 10, 2024 (1995).CrossRefGoogle Scholar
Caillard, D. and Martin, J.L.: Thermally Activated Mechanisms in Crystals Plasticity, 1st ed. (Elsevier Science, Cambrige, UK, 2003); pp. 13–51.Google Scholar
Mayo, M.J. and Nix, W.D.: A micro-indentation study of superplasticity in Pb, Sn, and Sn–38 wt% Pb. Acta Metall. 36, 2183 (1988).CrossRefGoogle Scholar
Goodall, R. and Clyne, T.W.: A critical appraisal of the extraction of creep parameters from nanoindentation data obtained at room temperature. Acta Mater. 54, 5489 (2006).CrossRefGoogle Scholar
Lucas, B.N. and Oliver, W.C.: Indentation power-law creep of high-purity indium. Metall. Mater. Trans. A 30, 601 (1999).CrossRefGoogle Scholar
Rar, A., Sohn, S., Oliver, W.C., Goldsby, D.L., Tullis, T.E., and Pharr, G.M.: On the measurement of creep by nanoindentation with continuous stiffness techniques. MRS Proc. 841, R.4.2.1 (2004).CrossRefGoogle Scholar
Bruder, E., Braun, P., ur Rehman, H., Marceau, R.K.W., Taylor, A.S., Pippan, R., and Durst, K.: Influence of solute effects on the saturation grain size and rate sensitivity in Cu-X alloys. Scr. Mater. 144, 5 (2018).CrossRefGoogle Scholar
Backes, B., Huang, Y.Y., Göken, M., and Durst, K.: The correlation between the internal material length scale and the microstructure in nanoindentation experiments and simulations using the conventional mechanism-based strain gradient plasticity theory. J. Mater. Res. 24, 1197 (2009).CrossRefGoogle Scholar
Durst, K., Backes, B., and Göken, M.: Indentation size effect in metallic materials: Correcting for the size of the plastic zone. Scr. Mater. 52, 1093 (2005).CrossRefGoogle Scholar
Maier-Kiener, V., An, X., Li, L., Zhang, Z., Pippan, R., and Durst, K.: Influence of solid solution strengthening on the local mechanical properties of single crystal and ultrafine-grained binary Cu–AlX solid solutions. J. Mater. Res. 32, 4583 (2017).CrossRefGoogle Scholar
Bolshakov, A. and Pharr, G.M.: Influences of pileup on the measurement of mechanical properties by load and depth sensing indentation techniques. J. Mater. Res. 13, 1049 (1998).CrossRefGoogle Scholar
King, R.B.: Elastic analysis of some punch problems for a layered medium. Int. J. Solids Struct. 23, 1657 (1987).CrossRefGoogle Scholar
Chen, J., Shen, Y., Liu, W., Beake, B.D., Shi, X., Wang, Z., Zhang, Y., and Guo, X.: Effects of loading rate on development of pile-up during indentation creep of polycrystalline copper. Mater. Sci. Eng., A 656, 216 (2016).CrossRefGoogle Scholar
Zehnder, C., Bruns, S., Peltzer, J-N., Durst, K., Korte-Kerzel, S., and Möncke, D.: Influence of cooling rate on cracking and plastic deformation during impact and indentation of borosilicate glasses. Front. Mater. 4, 1 (2017).CrossRefGoogle Scholar