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Influence of solid solution strengthening on the local mechanical properties of single crystal and ultrafine-grained binary Cu–AlX solid solutions

Published online by Cambridge University Press:  22 August 2017

Verena Maier-Kiener ,
Xianghai An ,
Linlin Li ,
Zhefeng Zhang ,
Reinhard Pippan  and
Karsten Durst
Verena Maier-Kiener
Affiliation:
Montanuniversität Leoben, Department Physical Metallurgy and Materials Testing, Leoben A-8700, Austria
Xianghai An
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China; and School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia
Linlin Li
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
Zhefeng Zhang
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
Reinhard Pippan
Affiliation:
Austrian Academy of Sciences, Erich-Schmid-Institute of Materials Science, Leoben A-8700, Austria
Karsten Durst*
Affiliation:
TU Darmstadt, Physical Metallurgy, Darmstadt 64287, Germany
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

In this work, the influence of Al-solutes on the mechanical behavior of Cu–AlX solid solutions has been studied using indentation strain rate jump tests for single crystalline and ultrafine-grained (UFG) microstructures from high pressure torsion (HPT) processing. Al-solutes in Cu classically lead to a solid solution strengthening, coupled with a decrease in stacking fault energy, which influences also the grain size after HPT processing. For all alloys, a higher hardness is found at lower indentation depths, which can be nicely described by a modified Nix/Gao model down to 100 nm indentation depth. Among the single crystals, the largest size effects are found for the higher solute contents, indicating a stronger work hardening at small length scales for the solid solutions. The dilute UFG solid solutions showed a strong softening after a strain rate reduction test, with a pronounced transient region. Cu–Al15 is, however, quite stable, showing abrupt changes in hardness without strong transients. This indicates that solute solution strengthening does not only influence the indentation size effect and structure formation during HPT processing but also stabilizes the grain structure during subsequent deformation.

Keywords

nanostructurenano-indentationhardness
Type
Articles
Information
Journal of Materials Research , Volume 32 , Issue 24: Focus Issue: Mechanical Properties and Microstructure of Advanced Metallic Alloys—in Honor of Prof. Haël Mughrabi PART B , 28 December 2017 , pp. 4583 - 4591
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Copyright
Copyright © Materials Research Society 2017 

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Footnotes

Contributing Editor: Mathias Göken

References

REFERENCES

Backes, B., Durst, K., and Göken, M.: Determination of plastic properties of polycrystalline metallic materials by nanoindentation: Experiments and finite element simulations. Philos. Mag. 86, 5541 (2006).Google Scholar
Valiev, R.Z., Alexandrov, I.V., Zhu, Y.T., and Lowe, T.C.: Paradoxon of strength and ductility in metals processed by SPD. J. Mater. Res. 17, 5 (2002).Google Scholar
Höppel, H.W., May, J., and Göken, M.: Enhanced strength and ductility in ultrafine-grained aluminium produced by accumulative roll bonding. Adv. Eng. Mater. 6, 781 (2004).Google Scholar
May, J., Höppel, H.W., and Göken, M.: Strain rate sensitivity of ultrafine-grained aluminium processed by severe plastic deformation. Scr. Mater. 53, 189 (2005).Google Scholar
May, J., Höppel, H.W., and Göken, M.: Strain rate sensitivity of ultrafine grained fcc- and bcc-type metals. Mater. Sci. Forum 503–504, 781 (2006).Google Scholar
Li, Y.J., Mueller, J., Höppel, H.W., Göken, M., and Blum, W.: Deformation kinetics of nanocrystalline nickel. Acta Mater. 55, 5708 (2007).Google Scholar
Nix, W.D. and Gao, H.: Indentation size effects in crystalline materials: A law for strain gradient plasticity. J. Mech. Phys. Solids 46, 411 (1998).Google 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).Google Scholar
Kiener, D., Durst, K., Rester, M., and Minor, A.M.: Revealing deformation mechanisms with nanoindentation. JOM 61, 14 (2009).Google Scholar
Lodes, M.A., Hartmaier, A., Göken, M., and Durst, K.: Influence of dislocation density on the pop-in behavior and indentation size effect in CaF2 single crystals: Experiments and molecular dynamics simulations. Acta Mater. 59 (2011).Google Scholar
Durst, K., Franke, O., Böhner, A., and Göken, M.: Indentation size effect in Ni–Fe solid solutions. Acta Mater. 55, 6825 (2007).Google 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 ultrafine-grained Al. J. Mater. Res. 26, 1421 (2011).Google 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
Pippan, R., Scheriau, S., Hohenwarter, A., and Hafok, M.: Advantages and limitations of HPT: A review. Mater. Sci. Forum 584–586, 16 (2008).Google Scholar
Edalati, K. and Horita, Z.: A review on high-pressure torsion (HPT) from 1935 to 1988. Mater. Sci. Eng., A 652, 325 (2016).CrossRefGoogle Scholar
An, X.H., Qu, S., Wu, S.D., and Zhang, Z.F.: Effects of stacking fault energy on the thermal stability and mechanical properties of nanostructured Cu–Al alloys during thermal annealing. J. Mater. Res. 26, 407 (2011).Google Scholar
An, X.H., Wu, S.D., and Zhang, Z.F.: Influence of stacking fault energy on the microstructures and grain refinement in the Cu–Al alloys during equal-channel angular pressing. Mater. Sci. Forum 667–669, 379 (2011).Google Scholar
An, X.H., Wu, S.D., Zhang, Z.F., Figueiredo, R.B., Gao, N., and Langdon, T.G.: Evolution of microstructural homogeneity in copper processed by high-pressure torsion. Scr. Mater. 63, 560 (2010).Google Scholar
An, X.H., Lin, Q.Y., Wu, S.D., Zhang, Z.F., Figueiredo, R.B., Gao, N., and Langdon, T.G.: Formation of fivefold deformation twins in an ultrafine-grained copper alloy processed by high-pressure torsion. Scr. Mater. 64, 249 (2011).Google Scholar
An, X.H., Han, W.Z., Huang, C.X., Zhang, P., Yang, G., Wu, S.D., and Zhang, Z.F.: High strength and utilizable ductility of bulk ultrafine-grained Cu–Al alloys. Appl. Phys. Lett. 92, 23 (2008).Google Scholar
Han, W.Z., Zhang, Z.F., Wu, S.D., and Li, S.X.: Combined effects of crystallographic orientation, stacking fault energy and grain size on deformation twinning in fcc crystals. Philos. Mag. 88, 3011 (2008).Google Scholar
Gong, Y.L., Wen, C.E., Wu, X.X., Ren, S.Y., Cheng, L.P., and Zhu, X.K.: The influence of strain rate, deformation temperature and stacking fault energy on the mechanical properties of Cu alloys. Mater. Sci. Eng., A 583, 199 (2013).Google Scholar
Zhang, Y., Tao, N.R., and Lu, K.: Effects of stacking fault energy, strain rate and temperature on the microstructure and strength of nanostructured Cu–Al alloys subjected to plastic deformation. Acta Mater. 59, 6048 (2011).Google Scholar
Hafok, M. and Pippan, R.: Influence of stacking fault energy and alloying on stage V hardening of HPT-deformed materials. Int. J. Mater. Res. 101, 1097 (2010).Google Scholar
Edalati, K., Akama, D., Nishio, A., Lee, S., Yonenaga, Y., Cubero-Sesin, J.M., and Horita, Z.: Influence of dislocation–solute atom interactions and stacking fault energy on grain size of single-phase alloys after severe plastic deformation using high-pressure torsion. Acta Mater. 69, 68 (2014).Google Scholar
Hohenwarter, A., Taylor, A., Stock, R., and Pippan, R.: Effect of large shear deformations on the fracture behavior of a fully pearlitic steel. Metallurgical and Materials Transactions A 42, 1609 (2011).Google Scholar
An, X., Lin, Q., Wu, S., and Zhang, Z.: Improved fatigue strengths of nanocrystalline Cu and Cu–Al alloys. Mater. Res. Lett. 3, 135 (2015).Google Scholar
Gallagher, P.C.J.: The influence of alloying, temperature, and related effects on the stacking fault energy. Metall. Trans. 1, 2429 (1970).Google Scholar
Engler, O.: Deformation and texture of copper–manganese alloys. Acta Mater. 48, 4827 (2000).Google Scholar
Oliver, W.C. and Pharr, G.M.: Improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments. J. Mater. Res. 7, 1564 (1992).CrossRefGoogle 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).Google Scholar
Pharr, G.M., Strader, J.H., and Oliver, W.C.: Critical issues in making small-depth mechanical property measurements by nanoindentation with continuous stiffness measurement. J. Mater. Res. 24, 653 (2009).Google Scholar
Merle, B., Maier-Kiener, V., and Pharr, G.M.: Influence of modulus-to-hardness ratio and harmonic parameters on continuous stiffness measurement during nanoindentation. Acta Mater. 134, 167 (2017).Google 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
Maier, V., Schunk, C., Göken, M., and Durst, K.: Microstructure-dependent deformation behaviour of bcc-metals—Indentation size effect and strain rate sensitivity. Philos. Mag. 95, 1766 (2014).CrossRefGoogle Scholar
Wei, Q., Cheng, S., Ramesh, K.T., and Ma, E.: Effect of nanocrystalline and ultrafine grain sizes on the strain rate sensitivity and activation volume: Fcc versus bcc metals. Mater. Sci. Eng., A 381, 71 (2004).Google 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).Google Scholar
Rester, M., Motz, C., and Pippan, R.: Stacking fault energy and indentation size effect: DO they interact? Scr. Mater. 58, 187 (2008).Google Scholar
Elmustafa, A.A. and Stone, D.S.: Stacking fault energy and dynamic recovery: Do they impact the indentation size effect? Mater. Sci. Eng., A 358, 1 (2003).Google Scholar
Portevin, A. and Le Chatelier, H.: Heat treatment of aluminium-copper alloys. Trans. Am. Soc. Steel Treat. 5, 457 (1924).Google Scholar
Blum, W. and Zeng, X.H.: A simple dislocation model of deformation resistance of ultrafine-grained materials explaining Hall–Petch strengthening and enhanced strain rate sensitivity. Acta Mater. 57, 1966 (2009).CrossRefGoogle Scholar
Ahmed, N. and Hartmaier, A.: Mechanisms of grain boundary softening and strain-rate sensitivity in deformation of ultrafine-grained metals at high temperatures. Acta Mater. 59, 4323 (2011).CrossRefGoogle Scholar
Wu, X.X., San, X.Y., Gong, Y.L., Chen, L.P., Li, C.J., and Zhu, X.K.: Studies on strength and ductility of Cu–Zn alloys by stress relaxation. Mater. Des. 47, 295 (2013).Google Scholar
Blum, W., Li, Y.J., and Durst, K.: Stability of ultrafine-grained Cu to subgrain coarsening and recrystallization in annealing and deformation at elevated temperatures. Acta Mater. 57(17), 5207–5217 (2009).Google Scholar