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The role of temperature in the strengthening of Cu–Al alloys processed by surface mechanical attrition treatment

Published online by Cambridge University Press:  04 May 2015

Lele Sun ,
Baozhuang Cai ,
Cuie Wen ,
Yanzhao Pang ,
Yu Shen  and
Xinkun Zhu
Lele Sun
Affiliation:
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
Baozhuang Cai
Affiliation:
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
Cuie Wen
Affiliation:
School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, Bundoora, Victoria 3083, Australia
Yanzhao Pang
Affiliation:
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
Yu Shen
Affiliation:
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
Xinkun Zhu*
Affiliation:
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

In the present work, Cu–Al alloys were processed by surface mechanical attrition treatment (SMAT) under both room and liquid nitrogen temperature (LNT) conditions. In contrast to room temperature (RT) SMAT, dynamic recovery and recrystallization were largely suppressed during the LNT process. A gradient microstructure was obtained due to the gradient strain and strain rate impacted onto the sample. Microhardness measurement showed that the hardness values gradually decreased from the top surface to the central region. The local hardness of the top surface layer of the LNT and RT SMAT Cu–4.5% Al samples reached maximum values of 1.52 and 1.28 GPa, respectively. The Cu–4.5% Al alloy exhibited an improved yield strength of ∼496 MPa and a higher ductility (compared with literature data of Cu–Al alloys synthesized traditional severe plastic deformation methods) of 15.4% after the LNT SMAT process. A brittle-ductile failure pattern was easily distinguished after fracture. Moreover, the LNT SMAT is a low-cost process with high productivity and can be applied to various types of metallic production.

Keywords

metalstrengthstructural
Type
Articles
Information
Journal of Materials Research , Volume 30 , Issue 10 , 28 May 2015 , pp. 1670 - 1677
Copyright
Copyright © Materials Research Society 2015 

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References

REFERENCES

Jahadi, R., Sedighi, M., and Jahed, H.: ECAP effect on the micro-structure and mechanical properties of AM30 magnesium alloy. Mater. Sci. Eng., A 593, 178 (2014).Google Scholar
An, X.H., Lin, Q.Y., Wu, S.D., and Zhang, Z.F.: Microstructural evolution and shear fracture of Cu-16 at.% Al alloy induced by equal channel angular pressing. Mater. Sci. Eng., A 527, 4510 (2010).Google Scholar
Zhilyaev, A.P., Gimazov, A.A., Raab, G.I., and Langdon, T.G.: Using high-pressure torsion for the cold-consolidation of copper chips produced by machining. Mater. Sci. Eng., A 486, 123 (2008).Google Scholar
Li, Y.S., Tao, N.R., and Lu, K.: Microstructural evolution and nanostructure formation in copper during dynamic plastic deformation at cryogenic temperatures. Acta Mater. 56, 230 (2008).Google Scholar
Zhao, Y.H., Bingert, J.F., Liao, X.Z., Cui, B.Z., Han, K., Sergueeva, A.V., Mukherjee, A.K., Valiev, R.Z., Langdon, T.G., and Zhu, Y.T.: Simultaneously increasing the ductility and strength of ultra-fine-grained pure copper. Adv. Mater. 18, 2949 (2006).Google Scholar
Ma, E.: Instabilities and ductility of nanocrystalline and ultrafine-grained metals. Scr. Mater. 49, 663 (2003).Google Scholar
Koch, C.C.: Optimization of strength and ductility in nanocrystalline and ultrafine grained metals. Scr. Mater. 49, 657 (2003).Google Scholar
Lu, K. and Lu, J.: Nanostructured surface layer on metallic materials induced by surface mechanical attrition treatment. Mater. Sci. Eng., A 375, 38 (2004).Google Scholar
Wang, Y.M., Wang, K., Pan, D., Lu, K., Hemker, K.J., and Ma, E.: Microsample tensile testing of nanocrystalline copper. Scr. Mater. 48, 1581 (2003).Google Scholar
Zhu, K.Y., Vassel, A., Brisset, F., Lu, K., and Lu, J.: Nanostructure formation mechanism of α-titanium using SMAT. Acta Mater. 52, 4101 (2004).Google Scholar
Wen, M., Liu, G., Gu, J.F., Guan, W.M., and Lu, J.: The tensile properties of titanium processed by surface mechanical attrition treatment. Surf. Coat. Technol. 202, 4728 (2008).Google Scholar
Tao, N.R., Wang, Z.B., Tong, W.P., Sui, M.L., Lu, J., and Lu, K.: An investigation of surface nanocrystallization mechanism in Fe induced by surface mechanical attrition treatment. Acta Mater. 50, 4603 (2002).Google Scholar
Wang, Z.B., Lu, J., and Lu, K.: Wear and corrosion properties of a low carbon steel processed by means of SMAT followed by lower temperature chromizing treatment. Surf. Coat. Technol. 201, 2796 (2006).Google Scholar
Darling, K.A., Tschopp, M.A., Roberts, A.J., Ligda, J.P., and Kecskes, L.J.: Enhancing grain refinement in polycrystalline materials using surface mechanical attrition treatment at cryogenic temperatures. Scr. Mater. 69, 461 (2013).Google Scholar
Rohatgi, A., Vecchio, K.S., and Gray, G.T. III: A metallographic and quantitative analysis of the influence of stacking fault energy on shock-hardening in Cu and Cu–Al alloys. Acta Mater. 49, 427 (2001).Google Scholar
Wang, K., Tao, N.R., Liu, G., Lu, J., and Lu, K.: Plastic strain-induced grain refinement at the nanometer scale in copper. Acta Mater. 54, 5281 (2006).Google Scholar
Hay, J.L. and Pharr, G.M.: Instrumented indentation testing. In ASM Handbook, Vol. 8, (ASM International, Ohio, 2000); p. 232.Google Scholar
Waltz, L., Retraint, D., Roos, A., and Olier, P.: Combination of surface nanocrystallization and co-rolling: Creating multilayer nanocrystalline composites. Scr. Mater. 60, 21 (2009).Google Scholar
Waltz, L., Retraint, D., Roos, A., Olier, P., and Lu, J.: High strength nanocrystallized multilayered structure obtained by SMAT and co-rolling. Mater. Sci. Forum 614, 249 (2009).Google Scholar
Cai, B.Z., Long, Y., Wen, C., Gong, Y.L., Li, C.J., Tao, J.M., and Zhu, X.K.: Role of stacking fault energy and strain rate in strengthening of Cu and Cu–Al alloys. J. Mater. Res. 29, 1747 (2014).Google Scholar
Zhao, Y.H., Horita, Z., Langdon, T.G., and Zhu, Y.T.: Evolution of defect structures during cold rolling of ultrafine-grained Cu and Cu–Zn alloys: Influence of stacking fault energy. Mater. Sci. Eng., A 474, 342 (2008).Google Scholar
Zhang, Z.J., Duan, Q.Q., An, X.H., Wu, S.D., Yang, G., and Zhang, Z.F.: Microstructure and mechanical properties of Cu and Cu–Zn alloys produced by equal channel angular pressing. Mater. Sci. Eng., A 528, 4259 (2011).Google Scholar
Shen, T.D. and Koch, C.C.: Formation and hardening effects in nanocrystalline Ti-N alloys prepared by mechanical alloying. Acta Mater. 44, 751 (1996).Google Scholar
Guo, J.Y., Wang, K., and Lu, L.: Tensile properties of Cu with deformation twins induced by SMAT. J. Mater. Sci. Technol. 22, 6 (2006).Google Scholar
Wu, X.L., Jiang, P., Chen, L., Zhang, J.F., Yuan, F.P., and Zhu, Y.T.: Synergetic strengthening by gradient structure. Mater. Res. Lett. 2, 185–191 (2014).Google Scholar
Tian, J.W., Dai, K., Villegas, J.C., Shaw, L., Lian, P.K., Klarstrom, D.L., and Ortiz, A.L.: Tensile properties of a nickel-base alloy subjected to surface severe plastic deformation. Mater. Sci. Eng., A 493, 176 (2008).Google Scholar
Li, J.G., Umemoto, M., Todaka, Y., and Tsuchiya, K.: Role of strain gradient on the formation of nanocrystalline structure produced by severe plastic deformation. Acta Mater. 55, 1397 (2007).Google Scholar
Wang, Y.M. and Ma, E.: Three strategies to achieve uniform tensile deformation in a nanostructured metal. Acta Mater. 52, 1699 (2004).Google Scholar
Subramanya Sarma, V., Wang, J., Jian, W.W., Kauffmann, A., Conrad, H., Freudenberger, J., and Zhu, Y.T.: Role of stacking fault energy in strengthening due to cryo-deformation of FCC metals. Mater. Sci. Eng., A 527, 7624 (2010).Google Scholar
Qu, S., An, X.H., Yang, H.J., Huang, C.X., Yang, G., Zang, Q.S., Wang, Z.G., Wu, S.D., and Zhang, Z.F.: Microstructural evolution and mechanical properties of Cu–Al alloys subjected to equal channel angular pressing. Acta Mater. 57, 1586 (2009).Google Scholar
An, X.H., Wu, S.D., Wang, Z.G., and Zhang, Z.F.: Enhanced cyclic deformation responses of ultrafine-grained Cu and nanocrystalline Cu–Al alloys. Acta Mater. 74, 200 (2014).Google Scholar
Ning, J.L. and Wang, D.: Concurrent high strength and high ductility in isotropic bulk Cu-Al alloy with three-dimensional nano-twinned structure. J. Alloys Compd. 514, 214 (2012).Google Scholar
San, X.Y., Liang, X.G., Cheng, L.P., Shen, L., and Zhu, X.K.: Effect of stacking fault energy on mechanical properties of ultrafine-grain Cu and Cu–Al alloy processed by cold-rolling. Trans. Nonferrous Met. Soc. China 22, 819 (2012).Google Scholar
An, X.H., Lin, Q.Y., Wu, S.D., Zhang, Z.F., Figueiredo, R.B., Gao, N., and Langdon, T.G.: The influence of stacking fault energy on the mechanical properties of nanostructured Cu and Cu–Al alloys processed by high-pressure torsion. Scr. Mater. 64, 954 (2011).Google Scholar
An, X.H., Wu, S.D., Zhang, Z.F., Figueiredo, R.B., Gao, N., and Langdon, T.G.: Enhanced strength-ductility synergy in nanostructured Cu and Cu–Al alloys processed by high-pressure torsion and subsequent annealing. Scr. Mater. 66, 227 (2012).Google Scholar
Zhang, Y., Tao, N.R., and Lu, K.: Effects of stacking fault energy, strain rate and temperature on microstructure and strength of nanostructured Cu–Al alloys subjected to plastic deformation. Acta Mater. 59, 6048 (2011).Google Scholar
Subramanya Sarma, V., Sivaprasad, K., Sturm, D., and Heilmaier, M.: Microstructure and mechanical properties of ultra fine grained Cu–Zn and Cu–Al alloys produced by cryorolling and annealing. Mater. Sci. Eng., A 489, 253 (2008).Google Scholar