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Effect of Solid Solution Impurities on Dislocation Nucleation During Nanoindentation

Published online by Cambridge University Press:  01 August 2005

D.F. Bahr  and
G. Vasquez
D.F. Bahr*
Affiliation:
School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920
G. Vasquez
Affiliation:
School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Dislocation nucleation in solid solutions of face-centered-cubic metallic materials was studied using nanoindentation. The effects of solute impurities in the copper–nickel system on the formation of dislocations in a previously dislocation-free region were demonstrated to be minimal. The shear stress required to nucleate dislocations in copper is approximately 1.6 GPa, while in nickel a 3.9 GPa shear stress is required. Changes in shear stress for nucleation track closely with changes in elastic modulus showing the nucleation stress is approximately 1/30 to 1/20 of the shear modulus. The expected solid-solution strengthening is identified within the same experimental method, demonstrating unambiguously the fact that solid-solution impurities in this system will impact the propagation of dislocations during plastic deformation but not alter the homogeneous nucleation of dislocations in these materials.

Keywords

DislocationsNanoindentation
Type
Rapid Communications
Information
Journal of Materials Research , Volume 20 , Issue 8 , August 2005 , pp. 1947 - 1951
Copyright
Copyright © Materials Research Society 2005

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References

REFERENCES

1Schuh, C.A. and Lund, A.C.: Application of nucleation theory to the rate dependence of incipient plasticity during nanoindentation. J. Mater. Res. 19, 2152 (2004).Google Scholar
2Syed-Asif, S.A. and Pethica, J.B.: Nanoindentation creep of single-crystal tungsten and gallium arsenide. Philos. Mag. A 76, 1105 (1997).Google Scholar
3Minor, A.M., Lilleodden, E.T., Stach, E.A. and Morris, J.W.: Direct observations of incipient plasticity during nanoindentation of Al. J. Mater. Res. 19, 176 (2004).CrossRefGoogle Scholar
4Bahr, D.F., Kramer, D.E. and Gerberich, W.W.: Non-linear deformation mechanisms during nanoindentation. Acta Mater. 46, 3605 (1998).Google Scholar
5Mann, A.B. and Pethica, J.B.: Role of atomic size asperities in the mechanical deformation of nanocontacts. Appl. Phys. Lett. 69, 907 (1996).CrossRefGoogle Scholar
6Jesson, D.E., Chen, K.M., Pennycook, S.J., Thundat, T. and Warmack, R.J.: Crack-like sources of dislocation nucleation and multiplication in thin films. Science 268, 1161 (1995).Google Scholar
7Tanguy, D., Mareschal, M., Lomdahl, P.S., Germann, T.C., Holian, B.L. and Ravelo, R.: Dislocation nucleation induced by a shock wave in a perfect crystal: Molecular dynamics simulations and elastic calculations. Phys. Rev. B 68, 144111 (2003).Google Scholar
8Kramer, D.E. and Foecke, T.: Transmission electron microscopy observations of deformation and fracture in nanolaminated Cu–Ni thin films. Philos. Mag. A 82, 3375 (2002).CrossRefGoogle Scholar
9Schuh, C.A., Nieh, T.G. and Iwasaki, H.: The effect of solid solution W additions on the mechanical properties of nanocrystalline Ni. Acta Mater. 51, 431 (2003).CrossRefGoogle Scholar
10Rice, J.R.: Dislocation nucleation from a crack tip. An analysis based on the Peierls concept. J. Mech. Phys. Solids 40, 239 (1992).CrossRefGoogle Scholar
11Choi, Y., Vliet, K.J.V., Li, J. and Suresh, S.: Size effects on the onset of plastic deformation during nanoindentation of thin films and patterned lines. J. Appl. Phys. 94, 6050 (2003).Google Scholar
12Zhu, T., Li, J., Vliet, K.J.V., Ogata, S., Yip, S. and Suresh, S.: Predictive modeling of nanoindentation-induced homogeneous dislocation nucleation in copper. J. Mech. Phys. Solids 52, 691 (2004).CrossRefGoogle Scholar
13Kelchner, C.L., Plimpton, S.J. and Hamilton, J.C.: Dislocation nucleation and defect structure during surface indentation. Phys. Rev. B 58, 11085 (1998).Google Scholar
14Gerberich, W.W., Tymiak, N.I., Grunlan, J.C., Horstemeyer, M.F. and Baskes, M.I.: Interpretation of indentation size effects. J. Appl. Mech. 69, 433 (2002).Google Scholar
15Cotrell, A.H.: Dislocations and Plastic Flow in Crystals (Oxford Press, Oxford, U.K., 1953), pp. 11–12, 53–54.Google Scholar
16Voort, G.F. Vander: Metallography Principles and Practice (McGraw-Hill, New York, 1984), p. 717.Google Scholar
17Gerberich, W.W., Nelson, J.C., Lilleodden, E.E., Anderson, P. and Wyrobek, J.T.: Indentation induced dislocation nucleation: The initial yield point. Acta Mater 44, 3585 (1996).CrossRefGoogle Scholar
18Johnson, K.L.: Contact Mechanics (Cambridge University Press, New York, 1985), pp. 90–104.Google Scholar
19Oliver, 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
20Suresh, S., Nieh, T.G. and Choi, B.W.: Nano-indentation of copper thin films on silicon substrates. Scripta Mater. 41, 951 (1999).CrossRefGoogle Scholar
21Hirth, J.P. and Lothe, J.: Theory of Dislocations, 2nd ed. (Krieger Publishing, Miami, FL, 1992), pp. 681–685.Google Scholar
22Pang, M., Bahr, D.F. and Lynn, K.G.: Effects of Zn addition and thermal annealing on yield phenomena of CdTe and Cd0.96Zn0.04Te single crystals by nanoindentation. Appl. Phys. Lett. 82, 1200 (2003).Google Scholar