Hostname: page-component-8448b6f56d-xtgtn Total loading time: 0 Render date: 2024-04-24T13:56:04.560Z Has data issue: false hasContentIssue false
  • English
  • Français

Tensile behavior of fully nanotwinned alloys with varying stacking fault energies

Published online by Cambridge University Press:  10 May 2017

Nathan M. Heckman ,
Leonardo Velasco  and
Andrea M. Hodge
Nathan M. Heckman
Affiliation:
Department of Aerospace and Mechanical Engineering, Mork Family Department of Chemical Engineering and Material Science, University of Southern California, Los Angeles, CA 900089, USA
Leonardo Velasco
Affiliation:
Department of Aerospace and Mechanical Engineering, Mork Family Department of Chemical Engineering and Material Science, University of Southern California, Los Angeles, CA 900089, USA Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
Andrea M. Hodge*
Affiliation:
Department of Aerospace and Mechanical Engineering, Mork Family Department of Chemical Engineering and Material Science, University of Southern California, Los Angeles, CA 900089, USA
*
Address all Correspondence to Andrea M. Hodge at ahodge@usc.edu
Get access

Abstract

In this study, a comparison of the tensile behavior of fully nanotwinned Cu–6 wt.%Al, Cu–2 wt.%Al, and Cu–10 wt.%Ni with stacking fault energies (SFEs) of 6, 37, and 60 mJ/m2, respectively is presented. The samples displayed yield strengths ranging from 830 to 1340 MPa, varying with both alloy content and microstructural parameters. All samples showed low ductility, even though there are tilted twin boundaries present in Cu–10 wt.%Ni. The influence of varying grain width is presented for each alloy and related to both the activation volume and SFE [Figs. 3(a)–3(c)].

Type
Research Letters
Information
MRS Communications , Volume 7 , Issue 2 , June 2017 , pp. 253 - 258
Check for updates
Copyright
Copyright © Materials Research Society 2017 

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

1. Lu, L.: Current progress of mechanical properties of metals with nano-scale twins. J. Mater. Sci. Technol. 24, 473 (2008).Google Scholar
2. Lu, L., Shen, Y., Chen, X., Qian, L. and Lu, K.: Ultrahigh strength and high electrical conductivity in copper. Science 304, 422 (2004).Google Scholar
3. Zhao, Y., Cheng, I.C., Kassner, M.E. and Hodge, A.M.: The effect of nanotwins on the corrosion behavior of copper. Acta Mater. 67, 181 (2014).CrossRefGoogle Scholar
4. Zhao, Y., Furnish, T.A., Kassner, M.E. and Hodge, A.M.: Thermal stability of highly nanotwinned copper: The role of grain boundaries and texture. J. Mater. Res. 27, 3049 (2012).CrossRefGoogle Scholar
5. Zhang, X. and Misra, A.: Superior thermal stability of coherent twin boundaries in nanotwinned metals. Scr. Mater. 66, 860 (2012).Google Scholar
6. Yan, F.K., Liu, G.Z., Tao, N.R. and Lu, K.: Strength and ductility of 316 L austenitic stainless steel strengthened by nano-scale twin bundles. Acta Mater. 60, 1059 (2012).CrossRefGoogle Scholar
7. Xiao, G.H., Tao, N.R. and Lu, K.: Strength-ductility combination of nanostructured Cu–Zn alloy with nanotwin bundles. Scr. Mater. 65, 119 (2011).Google Scholar
8. Lu, K., Yan, F.K., Wang, H.T. and Tao, N.R.: Strengthening austenitic steels by using nanotwinned austenitic grains. Scr. Mater. 66, 878 (2012).Google Scholar
9. Wang, H.T., Tao, N.R. and Lu, K.: Strengthening an austenitic Fe–Mn steel using nanotwinned austenitic grains. Acta Mater. 60, 4027 (2012).CrossRefGoogle Scholar
10. Lu, L., Chen, X., Huang, X. and Lu, K.: Revealing the maximum strength in nanotwinned copper. Science 323, 607 (2009).Google Scholar
11. Chen, X.H., Lu, L. and Lu, K.: Grain size dependence of tensile properties in ultrafine-grained Cu with nanoscale twins. Scr. Mater. 64, 311 (2011).Google Scholar
12. Yujie, W.: Scaling of maximum strength with grain size in nanotwinned fcc metals. Phys. Rev. B: Condens. Matter 83, 132104 (4 pp.) (2011).Google Scholar
13. Zhu, L., Ruan, H., Li, X., Dao, M., Gao, H. and Lu, J.: Modeling grain size dependent optimal twin spacing for achieving ultimate high strength and related high ductility in nanotwinned metals. Acta Mater. 59, 5544 (2011).CrossRefGoogle Scholar
14. Grace, F.I. and Inman, M.C.: Influence of stacking fault energy on dislocation configurations in shock-deformed metals. Metallography 3, 89 (1970).CrossRefGoogle Scholar
15. Li, W., Lu, S., Hu, Q.-M., Kwon, S.K., Johansson, B. and Vitos, L.: Generalized stacking fault energies of alloys. J. Phys., Condens. Matter 26, 265005 (2014).CrossRefGoogle ScholarPubMed
16. Rohatgi, A., Vecchio, K.S. and Gray, G.T. III: The influence of stacking fault energy on the mechanical behavior of Cu and Cu–Al alloys: Deformation twinning, work hardening, and dynamic recovery. Metall. Mater. Trans. A 32A, 135 (2001).Google Scholar
17. Velasco, L. and Hodge, A.M.: The mobility of growth twins synthesized by sputtering: Tailoring the twin thickness. Acta Mater. 109, 142 (2016).CrossRefGoogle Scholar
18. Heckman, N.M., Velasco, L. and Hodge, A.M.: Influence of twin thickness and grain size on the tensile behavior of fully nanotwinned CuAl alloys. Adv. Eng. Mater. 18, 918 (2016).Google Scholar
19. Sun, L., He, X. and Lu, J.: Atomistic simulation study on twin orientation and spacing distribution effects on nanotwinned Cu films. Philos. Mag. 95, 3467 (2015).CrossRefGoogle Scholar
20. You, Z., Li, X., Gui, L., Lu, Q., Zhu, T., Gao, H. and Lu, L.: Plastic anisotropy and associated deformation mechanisms in nanotwinned metals. Acta Mater. 61, 217 (2013).Google Scholar
21. Zhu, T. and Gao, H.: Plastic deformation mechanism in nanotwinned metals: An insight from molecular dynamics and mechanistic modeling. Scr. Mater. 66, 843 (2012).Google Scholar
22. Gu, P., Dao, M., Asaro, R.J. and Suresh, S.: A unified mechanistic model for size-dependent deformation in nanocrystalline and nanotwinned metals. Acta Mater. 59, 6861 (2011).CrossRefGoogle Scholar
23. Xiaoyan, L., Yujie, W., Lei, L., Ke, L. and Huajian, G.: Dislocation nucleation governed softening and maximum strength in nano-twinned metals. Nature 464, 877 (2010).Google Scholar
24. Wang, Y. and Ma, E.: Strain hardening, strain rate sensitivity, and ductility of nanostructured metals. Mater. Sci. Eng. A 375, 46 (2004).Google Scholar
25. Rice, J.R.: Dislocation nucleation from a crack tip: An analysis based on the Peierls concept. J. Mech. Phys. Solids 40, 239 (1992).Google Scholar
26. Van Swygenhoven, H., Derlet, P.M. and Froseth, A.G.: Stacking fault energies and slip in nanocrystalline metals. Nat. Mater. 3, 399 (2004).Google Scholar
27. Yamakov, V., Wolf, D., Phillpot, S., Mukherjee, A. and Gleiter, H.: Deformation-mechanism map for nanocrystalline metals by molecular-dynamics simulation. Nat. Mater. 3, 43 (2004).Google Scholar
28. Asaro, R.J. and Suresh, S.: Mechanistic models for the activation volume and rate sensitivity in metals with nanocrystalline grains and nano-scale twins. Acta Mater. 53, 3369 (2005).Google Scholar
29. Lu, L., Schwaiger, R., Shan, Z., Dao, M., Lu, K. and Suresh, S.: Nano-sized twins induce high rate sensitivity of flow stress in pure copper. Acta Mater. 53, 2169 (2005).Google Scholar
30. Zackay, V.F.: High-Strength Materials (John Wiley & Sons, Inc., New York; London; Sydney, 1965).Google Scholar
31. Conrad, H.: Grain size dependence of the plastic deformation kinetics in Cu. Mater. Sci. Eng., A 341, 216 (2003).Google Scholar
32. Asaro, R.J., Krysl, P. and Kad, B.: Deformation mechanism transitions in nanoscale fcc metals. Philos. Mag. Lett. 83, 733 (2003).Google Scholar